black fur and black eyes black fur and red eyes white fur and black eyes white fur and red eyes predicted fraction /16 /16 /16 /16
Answers
The expected fractions are 4/16 Black Fur, Black Eyes – 4/16 Black Fur, Red Eyes – 4/16 White Fur, Black Eyes – 4/16 White Fur, Red Eyes, assuming diallelic genes, exhibiting total dominance, and not interacting.
Data readily available:
The fur color and eye color of each individual are combined in this cross.
Over white fur, black fur is more prevalent.
Over red eyes, black eyes are more prevalent.
The two parents involved in the cross are dihybrid and homozygous recessive.
What conclusions are we able to draw from this data?The following genotypes and phenotypes are suggested based on the supposition that diallelic genes exist for each attribute, that these genes exhibit total dominance, and that no gene interactions exist.The fundamental physical and functional unit of heredity is a gene. DNA constitutes genes. Some genes serve as instructions for producing molecules known as proteins. Many genes, however, do not code for proteins. From a few hundred DNA bases to more than 2 million bases, human genes can range in size.To know more about diallelic genes, refer to the following link:
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Related Questions
PLEASE HELP!! ILL GIVE BRAINLIEST :((!!
How does the type of telescope you researched produce images, does it use glass lenses and mirrors?
Answers
Telescopes that use lenses are called refracting telescopes. The other type uses mirrors to focus the light of the image. These telescopes are called reflecting telescopes. Refracting telescopes use lenses to bend the light to a specific focal point such that the object will be magnified to the viewer.
light microscope
Optical instruments are based on optics. They use mirrors and lenses to reflect and refract light and form images. The light microscope and telescope use convex lenses and mirrors to make enlarged images of very tiny or distant objects. A camera uses a convex lens to make a reduced image of an object.
Refracting telescopes use lenses to focus the light, and reflecting telescopes use mirrors. I'll talk first about refracting ones. Refracting telescopes work by using two lenses to focus the light and make it look like the object is closer to you than it really is. Both lenses are in a shape that's called 'convex'.
the reflector telescope uses a mirror to gather and focus light. All celestial objects (including those in our solar system) are so far away that all of the light rays coming from them reach the Earth as parallel rays. Because the light rays are parallel to each other, the reflector telescope's mirror has a parabolic shape. The parabolic-shaped mirror focusses the parallel lights rays to a single point. All modern research telescopes and large amateur ones are of the reflector type because of its advantages over the refractor telescope.
Advantages
Reflector telescopes do not suffer from chromatic aberration because all wavelengths will reflect off the mirror in the same way.
Support for the objective mirror is all along the back side so they can be made very BIG!
Reflector telescopes are cheaper to make than refractors of the same size.
Because light is reflecting off the objective, rather than passing through it, only one side of the reflector telescope's objective needs to be perfect.
Disadvantages
It is easy to get the optics out of alignment.
A reflector telescope's tube is open to the outside and the optics need frequent cleaning.
Often a secondary mirror is used to redirect the light into a more convenient viewing spot. The secondary mirror and its supports can produce diffraction effects: bright objects have spikes (the ``christmas star effect'').
hope this helped!
___ will take calcium from the blood, whereas ___ will deposit calcium into the blood. Group of answer choices
Answers
The parathyroid hormone into the blood which is responsible for the regulation of calcium into the blood.
How calcium in the body is regulated?When the calcium in the blood is more than the requirement then the parathyroid hormone deposited the calcium into the bones.
While on the other hand, when the calcium in the blood is lower in concentration then this hormone release calcium from the bones so we can conclude that the parathyroid hormone into the blood which is responsible for the regulation of calcium into the blood,
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How do geographers use a spatial perspective to analyze complex issues and relationships?
Answers
Answer:
Geographers use maps and data to depict relationships of time, space, and scale. Geographers analyze relationships among and between places to reveal important spatial patterns. Geographers analyze complex issues and relationships with a distinctively spatial perspective.
Explanation:
hope this helps!
Geographers use a spatial perspective to analyze complex issues and relationships by considering the location, distribution, and interaction of people, places, and things.
They also consider the movement of people, goods, and ideas across space. For example, a geographer might use a spatial perspective to analyze the spread of disease by looking at the location of cases, the distribution of risk factors, and the movement of people between different areas.
Spatial perspective is important because it allows geographers to see the big picture and to understand how different factors interact to create complex patterns and processes. It also allows them to make predictions about how these patterns and processes might change in the future.
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10 pounds of seal for a killer whale to gain one pound (10:1). how many pounds of seal will it have to eat to gain 20 pounds of killer whale?
Answers
Answer:
200
Explanation:
20 times 10 is 200 easy
Answer:
200
Explanation:
Multiply 10 by 20 and you'll get 200.
10 pounds = 1 pound gained
? = 20 pound gained
10 : 1
? : 20
1 x 10 = 10
20 x 10 = 200
Hence, the killer whale will have to eat 200 pounds of seal to gain 20 pounds.
hope this helps and is right; p.s. i really need brainliest :)
How would the author of "Are 'Green' Cars Really All That Green?" dispute the claim in "Cars Without Gasoline Are Here" that biofuels are a good replacement for fossil fuels?
Answers
Answer:
A. By noting that biofuels come from vegetables such as corn and sugar beet.
Explanation:
The author claims that biofuels are a good replacement for fossil fuels in the vehicles because it produced less carbondioxide gas as compared to fossil fuels. The biofuels also produced pollution but less as compared to fossil fuel. This biofuel is extracted in the form of Bioethanol which is a type of alcohol made by fermentation process of starch crops such as corn, sugarcane, or sweet sorghum. This biofuel made from biological materials that decrease the production of carbondioxide gas.
As you observe an unknown cell under a microscope, you make the following observations..
Answers
Answer:
It is a plant cell that is being observed
Explanation:
With in the cell, there are chloroplasts that ONLY a plant cell has. It also has a cell wall which an animal cell does not, so it is clearly not an animal cell.
predict the environmental changes that would occur to the nudgee beach food web if nudgee beach permanently became an off-leash dog area
Answers
The environmental changes are alteration of predator-prey, disturbance in wildlife, change in specie composition and habitat modification.
Alteration of predator-prey: Increased predation from leash-free dogs will change the behaviour of prey species and a resultant change in the food web.
Disturbance in wildlife: Nesting, breeding and feeding habits of small animals, birds and reptiles will be disturbed causing a change in the population of these species.
Specie composition: The affected species will avoid the location or change their character due to the increase in the number of dogs. This will alter the present species' composition and a resulting change in the environment.
Habitat modification: Dogs will destroy the environment which will alter the habitat of other organisms in the food web.
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There are 20 different amino acids. What part of an amino acid changes to make each of the 20 amino acids different?
Answers
Answer: My precious baby boy the answer to your question is "The R-Group"
Explanation:
which part of the world was the last area colonized by the initial expansion of homo sapiens?
Answers
The Australian continent was the last area colonized by the initial expansion of Homosapiens
Between 200,000 to 300,000 years ago, Homosapiens, the first modern humans, developed from their early hominid forefathers. They acquired the ability to communicate some 50,000 years ago.
Around 70,000-100,000 years ago, the first modern people began to leave Africa.
Migrations proceeded down the Asian coast to Southeast Asia and Oceania, eventually colonizing Australia 65,000-50,000 years ago. Molecular clock estimations, genetic investigations, and archaeological evidence all indicate that modern people first colonized Sahul and Australia approximately 48,000-50,000 years ago. A substantial number of archaeological sites dating back more than 30,000 years have been unearthed in recent decades.
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ASAP
10. A study was conducted on the population size of grass eating animals
observed in the Great Plains of the United States. The graph below
shows changes in organism numbers over a 7 year period. Which
statements most likely explains the changes that have occurred over this
7 year period.
200
Number of Organisms
150
100
50
A. The population began to stabilize during year 4.
B. A new predator was introduced to the population during year 2.
C. Between years 1 and 2 an increase occurred due to the emigration
of additional organisms.
D. Between years 3 and 4 there were an equal number of births and
deaths occurring within this population.
! !
YAT
RESOURCE:
Answers
Answer:
A.The population begun to stabilize during year 4
Early to late stage decomposition beetles:
Answers
Early to late-stage decomposition beetles play a crucial role in the natural process of breaking down organic matter. These beetles are attracted to decaying material and can be found in all stages of decomposition.
During the early stages, the beetles primarily feed on the soft tissues and fluids of the decaying material. As the decomposition process continues, the beetles begin to feed on the drier and tougher parts of the organic matter. Different types of beetles are attracted to different stages of decomposition, and their presence can indicate the age and condition of the decaying material.
For example, carrion beetles are often found in the early stages of decomposition, while burying beetles are more commonly found in later stages. Understanding the role of decomposition beetles can help us better understand and appreciate the importance of this natural process in maintaining healthy ecosystems.
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The hepatic portal vein collects blood from the gi tract and conducts it to the ____.
a. liver
b. hepatic vein
c. heart
d. spleen
Answers
Answer:
a.
Explanation:
The portal vein or hepatic portal vein (HPV) is a blood vessel that carries blood from the gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
darwin found that many of the species on the galápagos islands
Answers
On the islands, Charles Darwin discovered several species of finches.
Thanks to his close observations, he discovered that the different species of finches varied from island to island.
In a rain forest, it is well known that 61% of water lizards have webbed-feet which provide the ability to walk on water. Furthermore, the gene for possessing webbed-feet is not hereditary and, thus, each water lizard is independent of others. A biologist randomly selects 25 water lizards from the rain forest. Let the random variable X count the number of water lizards out of the 25 who have webbed-feet. (a) State the distribution of the random variable defined above. (b) Compute the probability that exactly 17 of the 25 selected water lizards have webbed-feet. (c) Compute the probability that at least 17 of the 25 selected water lizards have webbed-feet. (d) Compute the mean and standard deviation for the number of water lizards out of 25 who have webbedfeet. Use both to describe the typical number of water lizards out of 25 who have webbed-feet. Report 6. Suppose the number of patients per week that visit a health center follows a Poisson distribution with a rate of 300 patients per week. Let the random variable X count the number of patients that visit the health center during a randomly selected week. (a) State the distribution of the random variable defined above. (b) Compute the probability that exactly 310 patients visit the health center during a randomly selected week. (c) Compute the probability that more than 280 patients visit the health center during a randomly selected week.
Answers
The distributions of the random variables in the given scenarios are (a) binomial for the water lizards and (b) Poisson for the health center visits. The probabilities can be calculated using the respective formulas for the corresponding distributions.
(a) The distribution of the random variable X, which counts the number of water lizards out of the 25 selected with webbed feet, follows a binomial distribution.
This is because each lizard can be considered as a Bernoulli trial (success: possessing webbed feet, failure: not possessing webbed feet) with a probability of success (p) equal to 61% or 0.61, and the trials are independent.
(b) To compute the probability that exactly 17 of the 25 selected water lizards have webbed feet, we can use the binomial probability formula.
The probability mass function (PMF) for the binomial distribution is given by P(X = k) = C(n, k) * p^k * (1-p)^(n-k), where C(n, k) represents the number of combinations of n items taken k at a time. Plugging in the values, we have P(X = 17) = C(25, 17) * 0.61^17 * (1-0.61)^(25-17).
(c) To compute the probability that at least 17 of the 25 selected water lizards have webbed feet, we need to calculate the cumulative probability from 17 to 25. This can be done by summing up the probabilities for each value of X from 17 to 25: P(X ≥ 17) = P(X = 17) + P(X = 18) + ... + P(X = 25).
(d) The mean (μ) and standard deviation (σ) for the number of water lizards out of 25 who have webbed feet can be calculated using the formulas for the binomial distribution.
The mean is given by μ = n * p, where n is the number of trials (25) and p is the probability of success (0.61). The standard deviation is given by σ = sqrt(n * p * (1-p)).
Moving on to the second scenario:
(a) The distribution of the random variable X, which counts the number of patients that visit the health center during a randomly selected week, follows a Poisson distribution.
This is because the number of patients per week can be modeled as a Poisson process, where events (patient visits) occur independently and at a constant average rate (300 patients per week).
(b) To compute the probability that exactly 310 patients visit the health center during a randomly selected week, we can use the Poisson probability formula.
The probability mass function (PMF) for the Poisson distribution is given by P(X = k) = (e^(-λ) * λ^k) / k!, where λ is the average rate of the Poisson process (300 patients per week) and k is the number of events we are interested in (310 patients).
(c) To compute the probability that more than 280 patients visit the health center during a randomly selected week, we need to calculate the cumulative probability from 280 to infinity. This can be done by summing up the probabilities for each value of X from 280 to infinity: P(X > 280) = P(X = 281) + P(X = 282) + ... + P(X = ∞).
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this answer i need pls ill mark brainliest
Answers
All - growth, exchange of gases, excretion, reproduction, and death (option d).
All living organisms undergo various life processes to maintain their existence. Let's analyze each option to determine which life processes are carried out by an organism's cells:
A. Only growth and exchange of gases: While cells are involved in growth and exchange of gases, they also participate in other life processes. This option is incomplete.
B. Only growth, exchange of gases, and reproduction: Cells play a crucial role in reproduction as they are responsible for the production of gametes and the process of cell division. However, there are additional life processes that cells also undertake.
C. Only growth, exchange of gases, excretion, and reproduction: This option includes excretion in addition to growth, exchange of gases, and reproduction. Cells participate in excretion by eliminating waste materials. However, there is one more life process that cells experience.
D. All - growth, exchange of gases, excretion, reproduction, and death: This option encompasses all the mentioned life processes. Cells are involved in growth as they undergo cell division and increase in number. They exchange gases through processes like respiration. Cells excrete waste products. They participate in reproduction through the formation of gametes and cell division. Lastly, cells also experience death as they have a limited lifespan.
Therefore, the correct answer is D. All - growth, exchange of gases, excretion, reproduction, and death.
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Identify the triangle that contains an acute angle for which the sine and cosine ratios are equal.
B А
B
A
40°
450
22
60°
45°
30
50
B
B
68
A
А
Answers
50 i think
Explanation:
be cause a right angle is 90 so if the acute angle is smaller it should be a smaller number but its hard to say without an image to help us out
All of the following statements are true regarding nutritional needs of children, EXCEPT:
Dietary requirements of boys and girls are generally the same until age nine.
Most bone mineralization occurs during adolescence.
Fiber intake is poorest in grade-school-aged children.
Children as young as two can determine for themselves how much they will eat.
Answers
When it comes to a child's nutritional needs, there are some important things to consider. Firstly, the dietary requirements of boys and girls are not the same until around age nine, when growth needs become more distinct.
Correct option is A.
During adolescence, the majority of bone mineralization occurs, which is why having a good intake of calcium during this period is important for bone health. In terms of fiber, grade-school-aged children typically have the poorest intake, so it is important to ensure they consume lots of whole grains, fruits, and vegetables which are rich in dietary fiber.
It is also important not to force children to eat more than they are comfortable with, as children as young as two can very accurately tell how much they are ready to eat. Therefore, providing nourishing food while also allowing the child to lead the way is essential.
Correct option is A.
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the characteristic of any receptor which allows it to respond to a specific or predetermined stimulus is called
Answers
The characteristic of any receptor which allows it to respond to a specific or predetermined stimulus is called specificity.
Receptors are specialized cells or proteins that detect and respond to specific stimuli, such as light, sound, or chemicals. The specificity of a receptor is what enables it to detect and respond to a particular type of stimulus, while ignoring others that are not relevant to its function.
Receptors are specialized proteins located on the surface or inside the cells of the body that bind with specific signaling molecules called ligands. The binding of a ligand to its receptor initiates a chain of chemical reactions that ultimately leads to a physiological response in the body. The specificity of a receptor is determined by the shape of its binding site, which is complementary to the shape of the ligand.
Each receptor is specialized to recognize and respond to a specific ligand or a group of structurally related ligands, and this specificity is critical for maintaining the appropriate physiological response in the body. For example, the beta-adrenergic receptor responds to the neurotransmitter adrenaline and related molecules, while the insulin receptor responds to the hormone insulin.
In summary, the ability of a receptor to respond to a specific or predetermined stimulus is due to its selectivity or specificity, which is determined by the shape of its binding site.
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how is muscle contraction stimulated by calcium ions? i. calcium ions are released from the sarcoplasmic reticulum and bind to myosin, stimulating atpase activity. ii. none of the other options. iii. calcium ions are released from the sarcoplasmic reticulum and bind to tropomyosin, stimulating its atpase activity. iv. calcium ions are released from the sarcoplasmic reticulum and bind to troponin c, promoting the binding of myosin to actin. v. calcium ions are released from the sarcoplasmic reticulum and bind to actin, promoting its binding to myosin.
Answers
Myosin and actin filaments of the muscle fibrils glide into one another as a result of calcium diffusing in the cytoplasm, resulting in the contraction of the complete muscle fiber.
How is muscle contraction stimulated by calcium ions?Myosin and actin filaments of the muscle fibrils glide into one another as a result of calcium diffusing in the cytoplasm, resulting in the contraction of the complete muscle fiber.
When the membrane of the T-tubular system is activated, calcium is released from the sarcoplasmic reticulum through calcium ion channels. As a result of its binding to Troponin C, which causes it to conform, the myosin head is able to cling to the actin filament, resulting in the contraction of the muscle.
In addition to facilitating mobility, muscle contraction even contributes to the body's posture, joint stability, and heat production. Muscle contraction exists responsible for maintaining posture, such as standing and sitting.
Therefore, the correct answer is option ii. none of the other options.
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4. Name the dark, linear, thread-like structures that you can see in some of the onion root tip cells. What Biomolecule of heredity do they contain
Answers
Why does the Moon seem to change shape?
A.
The Moon is orbiting the Earth.
B.
The Moon is squishy like a balloon.
C.
The light inside the Moon is sometimes turned off.
D.
The Sun stops making light sometimes.
Answers
Because the light of the sun and the earths orbit make the moon look different sometimes
If a cell has a normal osmotic pressure of 4500 mmhg and is placed into a solution with an osmotic pressure of 3500 mmhg. What will happen to the cell?
Answers
The cell will lose water and its osmotic pressure will decrease. If a cell has a normal osmotic pressure of 4500 mm Hg and is placed into a solution with an osmotic pressure of 3500 mm Hg
What is osmosis?The pressure created by a liquid or solvent diffusing through a membrane is known as osmotic pressure.
What is osmotic pressure?Osmotic pressure is the lowest amount of pressure that must be applied to a solution in order to stop solvent molecules from passing through a semipermeable membrane (osmosis). Its existence is a collaborative property that is reliant on the quantity of solute particles in the solution.
Example:You are mixing salt water into a solution. The mixture will be made up of water and salt (solute) (solvent).Effects of osmotic pressure:
The membrane separating the two solutions allows the solvent to go from the diluted to the more concentrated solution.
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what produces a unstable form of energy for the cell
Answers
Answer:
In both animal and plant cells. ... Only in plant cells. Mitochondria. Produces a usable form of energy for the cell.
you want to determine whether a tall pea plant is homozygous for tall height ot heterozygous for tall height . in order to know, what must the other contributing parent genotype be to determine the tall pea plant genotype? hint: think back to the example about dog deafness
Answers
Based on the provided hint, in order to determine whether a tall pea plant is homozygous or heterozygous for tall height, the other contributing parent genotype must be heterozygous for tall height.
In the example about dog deafness, it was explained that the deafness in dogs is a recessive trait, and the deafness genotype is dd.
If a deaf dog is crossed with a hearing dog, the deaf dog must be homozygous for the deafness allele (dd), and the hearing dog must be heterozygous (Dd) for the deafness allele in order to determine whether the offspring will be deaf or not.
Similarly, in order to determine whether a tall pea plant is homozygous (TT) or heterozygous (Tt) for tall height, it must be crossed with a pea plant that is known to be heterozygous for tall height (Tt).
If the offspring are all tall, the tall parent is likely homozygous (TT) for tall height. If the offspring are a mix of tall and short plants, the tall parent is likely heterozygous (Tt) for tall height.
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twin spots are formed when a rare mitotic crossover produces two adjacent recombinant daughter cells. these daughter cells . multiple choice question. die following the mitotic crossover continue to divide to produce patches on the body that are the same as each other, but different from the surrounding area continue to divide to produce patches on the body that are different from each other and from the surrounding area revert to their original phenotype
Answers
Twin spots are formed when a rare mitotic crossover produces two adjacent recombinant daughter cells. These daughter cells continue to divide to produce patches on the body that are the same as each other, but different from the surrounding area. Thus, the correct answer is option B.
Continue to divide to produce patches on the body that are different from each other and from the surrounding area. The term twin spots refer to a phenomenon where the body of an organism contains two spots that are genetically identical due to a somatic mutation. These identical spots arise from two adjacent daughter cells that result from a mitotic crossover. Such twin spots are known as sister twin spots. When the two daughter cells that arise from mitotic crossing over divide further, they produce patches of tissues that contain genetically identical cells. These patches are different from the surrounding tissues. Thus, the twin spots can be used as markers to study the genetic makeup of the organism's body. Therefore, twin spots can provide insights into somatic mutations that occur in an organism's genome.
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Animals adapt to meet survival needs.
What are the needs of survival?
reproduction and growth
reproduction and maintaining structure
getting and using energy, reproduction, and maintaining structure
eating and drinking
Answers
Animals adapt to meet their survival needs, which include getting and using energy, reproduction, and maintaining structure. Successful reproduction involves processes such as finding mates, fertilization, gestation, and giving birth or hatching offspring.
Survival needs refer to the essential requirements that animals must fulfill in order to survive and thrive in their environments. These needs involve various aspects of an animal's life. Firstly, animals need to obtain and utilize energy from their surroundings to fuel their metabolic processes. This involves acquiring and consuming food to extract nutrients and energy, as well as efficiently utilizing that energy for growth, maintenance, and other physiological functions.
Secondly, reproduction is a critical survival need for animals. It ensures the continuation of their species and passing on genetic information to the next generation. Successful reproduction involves processes such as finding mates, fertilization, gestation, and giving birth or hatching offspring.
Lastly, maintaining structure is vital for an animal's survival. This includes maintaining the integrity and functionality of their body systems, organs, and tissues. Animals need to adapt and regulate their internal environment to maintain homeostasis, which enables them to function optimally in their specific habitats.
In conclusion, animals adapt to meet their survival needs, which include obtaining and utilizing energy, reproduction, and maintaining the structure and functionality of their bodies. These adaptations allow animals to survive, reproduce, and thrive in their respective environments.
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What is the purpose of using pedigree
Answers
most bacteriophages consist of only a ____________ coat and a ________________ core.
Answers
Most bacteriophages consist of only a protein coat, also known as a capsid, and a nucleic acid core.
The protein coat serves as a protective layer that encapsulates the genetic material of the phage. It provides stability and allows the phage to withstand various environmental conditions.The protein coat, or capsid, is composed of repeating subunits called capsomeres. These capsomeres self-assemble to form the overall structure of the capsid. The capsid can have different shapes, such as icosahedral, filamentous, or complex, depending on the specific bacteriophage.
Within the protein coat lies the nucleic acid core, which contains the genetic material of the bacteriophage. The nucleic acid can be either DNA or RNA, depending on the type of phage. The genetic material carries the necessary instructions for the replication and assembly of new phage particles inside the host bacterium.The simplicity of the bacteriophage structure, with its protein coat and nucleic acid core, allows for efficient infection and replication within bacterial cells.
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Question 4
Blood sugar homeostasis plays an important role in our health and well-being. If
blood sugar levels get too low or high, there are serious health complications that
can result. Which two body systems regulate blood sugar levels? Click on the correct
answers.
Select 2 correct answer(s)
A-Nervous System
B-Musculoskeletal System
C-Respiratory System
D-Digestive System
Answers
Two of the organisms seemed to be more closely
related to each other than to the other vertebrates.
The type of evidence shown is using the field of -
Answers
The position and shape of the bones in the forelimbs of four present vertebrates were studied.
Two of the organisms seem to be more closely related to each other then to the other vertebrates this relationship was most likely based on evidence using the field of Comparative anatomy
What is comparative anatomy?
The work of French naturalist Pierre Belon, who demonstrated in 1555 that the skeletons of humans and birds are composed of identical parts and organised in the same way, is credited with giving rise to modern comparative anatomy. With the work of two French naturalists, Georges-Louis Leclerc, comte de Buffon and Louis-Jean-Marie Daubenton, who studied the anatomies of a variety of animals, comparative anatomy advanced quickly from this modest beginning in the 18th century. The topic was given a stronger solid foundation by French zoologist Georges Cuvier in the early 19th century when he claimed that animals' structural and functional traits are the result of interactions with their environment.To know more about comparative anatomy, click the link given below:
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