Contrast the reproductive strategy of lampreys with the reproductive strategy of sharks.
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Lampreys and sharks differ greatly in their reproductive strategies. Lampreys are considered to be primitive vertebrates, and they reproduce through spawning. They typically migrate to aquatic freshwater rivers or streams to lay their eggs in nests, after which the male fertilizes them externally.
Once the eggs hatch, the lamprey larvae will spend several years in the freshwater habitat before migrating to the ocean. In contrast, sharks are viviparous, which means that they give birth to live young. Sharks have internal fertilization, and their young develop in the mother's uterus, nourished by a placenta.
The gestation period varies greatly among shark species, and some give birth to a small number of well-developed pups, while others produce a large number of underdeveloped offspring that are left to fend for themselves. Overall, the reproductive strategies of lampreys and sharks are vastly different, reflecting the diversity of reproductive mechanisms found in the animal kingdom.
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Related Questions
What is happening to the size of the Pacific Ocean
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What would you need to do to your model to make it look like a true DNA molecule?
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Help pls… I’m lost
4.03
5
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Carbon monoxide: B) Burning gas in a closed area.
Nitrogen oxides: D) Made when it reacts with oxygen.
Particulate matter: A) From roadways, fields, or construction sites.
Sulfur oxides: C) Emissions from oil refineries.
Carbon monoxide: B) Burning gas in a closed area. Carbon monoxide is produced when fuels like gas or wood are burned without sufficient ventilation, such as in a closed room or vehicle.
Nitrogen oxides: D) Made when it reacts with oxygen. Nitrogen oxides are formed when nitrogen in the air combines with oxygen during high-temperature combustion processes, often found in vehicle engines and power plants.
Particulate matter: A) From roadways, fields, or construction sites. Particulate matter refers to small solid or liquid particles released into the air from sources like vehicle exhaust, dust from roads or fields, and construction activities.
Sulfur oxides: C) Emissions from oil refineries. Sulfur oxides are produced by burning fossil fuels containing sulfur, including those used in oil refineries and power plants, resulting in the release of these pollutants into the atmosphere.
The question was incomplete. find The full content below:
Match each pollutant with its source.
Term:
1. Carbon monoxide
2. Nitrogen oxides
3. Particulate matter
4. Sulfur oxides
Definition:
A) From roadways, fields, or construction sites
B) Burning gas in closed area
C) Emissions from oil refineries
D) Made when it reacts to oxygen
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Help Please ASAP
In the process of translation, the ribosome is the site where
A DNA strands are separated and copied
B free floating amino acids are picked up by tRNA
C amino acid chains are assembled from information in the mRNA
D information from DNA is copied to RNA
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How can “pretty boys” benefit different species?
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Benefits of "pretty boys" is their ability to attract potential mates and reproduce successfully.
How can “pretty boys” benefit the different species?"Pretty boys" in the context of animal behavior refer to males with particularly attractive physical traits that makes them more appealing to potential mates. This phenomenon is known as sexual selection and is a type of natural selection that occurs when certain physical or behavioral traits give individuals an advantage in the mating and reproduction.
In many species, females may choose to mate with males who have particularly attractive physical traits, like brightly colored feathers, elaborate displays, or intricate courtship dances. By selecting males with these traits, females may be choosing the mates who are genetically fit, have good health or resources.
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With Mitosis, The daughter cells are genetically___?
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Answer:
With mitosis, the daughter cells are genetically identical to each other, and to the parent cell.
Explanation:
The process in which a single parent cell divides into two new genetically identical daughter cells having the same amount of chromosomes as that of parent cell is called mitosis.
Question: What do you know about animal production, processing,
marketing, and breeding?
Answers
Answer:
sex
Explanation
they have to sexual intercourse to produce a baby
Answer:
production produce marketing and breeding because they also born baby and processing foods also in there part of body
Explanation:
little bit only I don't know so much if you think the answer is correct then it ok
Which of these is an example of a biotic factor that could limit a community in an ecosystem?
- A drought occurs for several months.
-New predators move into the ecosystem.
-A hurricane passes through an ecosystem.
-Living space is lost due to human activities.
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Explanation:
Drought, hurricane and living space are all abiotic factors in an environment. The only biotic factor here is the predators.
What is the meaning of the abbreviation T1: finger abductionL2: hip flexionL3: knee extensionL4: ankle dorsi-flexionL5: great toe extensionS1: ankle plantar-flexion/ankle eversion/hip extensionS2: knee flexion?
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The abbreviation T1, L2, L3, L4, L5, S1, and S2 refer to the spinal cord levels of the thoracic and lumbar vertebrae, as well as the sacral vertebrae.
Here is a list of what each acronym stands for:
The first thoracic vertebra, or T1, is situated in the upper back and is referred to as T1. L2: The second lumbar vertebra, or L2, is referred to as being in the lower back. The third lumbar vertebra, or L3, is situated immediately below L2 and is referred to as L3. The fourth lumbar vertebra, or L4, is the one immediately below L3. The fifth lumbar vertebra, or L5, is the one immediately below L4. First sacral vertebra, or S1, is referred to as this and is situated at the base of the spine. The second sacral vertebra, or S2, is the one that comes after S1 and is referred to as S2.For such more question on vertebrae:
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Where are chromosomes (and therefore DNA) found within the cell?
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Answer:nucleus
Explanation: In eukaryotes, however, genetic material is housed in the nucleus and tightly packaged into linear chromosomes. Chromosomes are made up of a DNA-protein complex called chromatin that is organized into subunits called nucleosomes.
If the greenhouse is sealed from the outside atmosphere, how would you predict this isolated system to differ from the carbon cycle of the outside world? Remember that this closed system only contains plants. Categorize each variable according to whether you would predict it to increase or decrease inside this system. Write / for increase and D for decrease.
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If the greenhouse is sealed from the outside atmosphere, how would you predict this isolated system to differ from the carbon cycle of the outside world and in this case the energy of closed system is decreased.
What is closed system?A closed system has been defined as the system in which there has only transfer of energy has takes place this type of system has been known as closed system.
Example - Transfer of heat from a cup of tea.
Mainly there are three type of system.
1:- Open System
2:- Closed System
3:- Isolated System
Open system:-
A system in which there is transfer of both energy and mass these types of system is called as open system.
Example:- Flow of water in a canals
Closed System:-
A system in which there is only transfer of energy is takes place this type of system is known as closed system.
Example - Transfer of heat from a cup of tea.
Therefore, If the greenhouse is sealed from the outside atmosphere, how would you predict this isolated system to differ from the carbon cycle of the outside world and in this case the energy of closed system is decreased.
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which of the following are characteristics shared between humans and apes? select all that apply. group of answer choices big toe and thumb separate from other digits stereoscopic vision femurs that turn inward toward the knee spines that have the same curvatures rotating shoulder joint
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The characteristics shared between humans and apes are big toe and thumb separate from other digits, stereoscopic vision, and rotating shoulder joint, the correct options are a, b, and e.
Both humans and apes have opposable thumbs, which allow them to grasp and manipulate objects, and a big toe that is separated from the other digits, which helps with balance and stability. Both humans and apes have two eyes that are located in the front of their heads, which allows for depth perception and the ability to judge distances accurately.
They have a rotating shoulder joint, which allows for a wide range of arm movements and the ability to reach and grasp objects from different angles, the correct options are a, b, and e.
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The complete question is:
Which of the following are characteristics shared between humans and apes? select those that apply:
a. big toe and thumb separate from other digits
b. stereoscopic vision
c. femurs that turn inward toward the knee
d. spines that have the same curvatures
e. rotating shoulder joint
cancer is the result of an improperly regulated cell cycle
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A minute-by-minute change in the atmosphere is the definition of ?
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Answer:weather
Explanation:
50 POINTS!!! ASAP
Which best describes a cell process common to both prokaryotic and eukaryotic
cells?
Both cell types carry out transcription in the nucleus.
Both cell types use ribosomes to translate mRNA into proteins.
Both cell types package proteins in the golgi apparatus.
Both cell types carry out translation in the endoplasmic reticulum.
Answers
Answer:
NO 3 :Both cell types use ribosomes to translate mRNA into proteins.
Answer: option 3
Explanation:
A species of moth has a 2 varieties of wing color: brown and white. As winter approaches, the trees where the moths live loose their leaves. The moth's predators are birds who hunt for the moths as they rest on the dark tree bark. Every moth lays 100 eggs, but only about 10 from each egg cluster live to adulthood. What are the variations in this population?
Answers
Answer:
In this case, the population of moths you're referring to has a number of variations. Here they are:
1. Wing Color Variation: The moths have two phenotypic variations for wing color, brown and white. This is a clear physical trait that can change based on the genetic makeup of the moth.
2. Survival Variation: Out of every 100 eggs laid, only about 10 moths survive to adulthood. This could imply a variation in the fitness or adaptability of the offspring, where only the most fit or adaptable (in terms of avoiding predators, finding food, or handling environmental conditions, for example) survive.
3. Seasonal Environment Variation: The environment where the moths live changes with the seasons. In winter, the trees lose their leaves, which may affect the camouflage ability of the moths depending on their wing color. This is a temporal variation in the environment, which can potentially influence the survival rates of the different moth variations.
4. Predation Variation: The predators of the moths are birds, which hunt for the moths as they rest on the dark tree bark. The level of predation can vary based on factors like the bird population size, hunting efficiency, and the visibility of the moths.
Each of these variations plays a role in the survival and reproduction of the moths and could lead to evolutionary changes in the population over time, especially if certain traits (like wing color) increase the moths' survival and reproductive success.
Which example best explains the interaction of Earth’s spheres when acid rain affects trees?
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Put the potential offspring genotypes in order from highest expected frequency to lowest expected frequency for a cross in which both parents have the RrTt genotype.
a. RrTt rrTt RRtt
b. RrTt RRtt rrTt
c. rrTt RRtt RrTt
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a. RrTt rrTt RRtt. Mendel's theory is based on the hybrid cross trait. Take the example of a dihybrid cross, which occurs when two doubly heterozygous individuals are bred together.
Using this Punnett square as a guide, next:
Dihybrid cross: where A stands for the dominant white seed characteristic, B stands for the recessive wrinkled seed trait, and a stands for the recessive yellow seed trait. B stands for the dominant smooth seed trait.
These are the dihybrid cross-ratios:
Dihybrid cross's genotypic ratio is 1: 2: 1: 2: 4: 2: 1: 2: 1.
9:3:3:1 would be the phenotypic ratio.
One can color the Punnett squares with comparable allele combinations to calculate the genotypic ratios, and then count the number of Punnett squares with the same color to determine the genetic ratios.
Take a look at the illustration below for a visual illustration: a dihybrid hybridization of pea plants that takes into account two features
Y, for green seeds against y, for yellow seeds (the dominating seed color characteristic) (recessive seed color trait)
R, for wrinkled seeds against r, for round seeds (the dominating seed texture feature) (recessive seed texture trait).
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Consider the following two statements about succession.
Student 1:
Matthew - As succession begins, communities tend to be dominated by mostly K-selected species. As succession continues, r-selected species tend to compete better and therefore become more and more common.
Student 2:
Iman - As succession begins, communities tend to be dominated by mostly r-selected species. As succession continues, K-selected species tend to compete better and therefore become more and more common.
Which student is correct?
a. Provide a rationale for your answer (2 marks)
b. Provide a specific example of succession which includes at least one example of an r-selected and one example of a K-selected species. (1 mark)
Note - No marks are earned by simply agreeing with either Matthew or Iman
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Write a paragraph about trains that were made in 1800's.
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Answer:
This significant aspect of the design was transferred to later locomotives. Railways were made out of cast-iron until the 1800s. Cast iron was sadly susceptible to corrosion and it was weak, often causing it to collapse under stress. John Birkinshaw invented a more robust material, wrought iron, in 1820.
Explanation:
considering the inheritance of color in these beetles, could the population of beetles ever be composed of only light brown beetles? the entire population of beetles could be light brown because directional selection will occur and one allele will be favored over the other. the entire population of beetles could not be light brown because an unstable equilibrium will not cause a change in the phenotypes. the entire population of beetles could not be light brown because the beetles with a light brown phenotype are heterozygotes. the entire population of beetles could be light brown because the higher fitness in the light brown environment results in elimination of the homozygous genotypes.
Answers
The population of beetles ever be composed of only light brown beetles because the entire population of beetles could be light brown because the higher fitness in the light brown environment results in the elimination of the homozygous genotypes. Option D is correct.
If the inheritance of color in these beetles is controlled by a single gene with two alleles, where the light brown phenotype is dominant and the dark brown phenotype is recessive. In this case, if the environment favors the light brown phenotype, individuals with at least one copy of the light brown allele would have higher fitness and survive and reproduce better than individuals with two copies of the dark brown allele.
Over time, this could lead to the elimination of the dark brown allele from the population, resulting in a population of only light brown beetles. However, if the beetles with a light brown phenotype are heterozygotes, then it is unlikely that the entire population could be light brown, as the dark brown allele would still be present in the population in the form of recessive alleles.
Hence, D. is the correct option.
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--The given question is incomplete, the complete question is
"Considering the inheritance of color in these beetles, could the population of beetles ever be composed of only light brown beetles? A) the entire population of beetles could be light brown because directional selection will occur and one allele will be favored over the other. B) the entire population of beetles could not be light brown because an unstable equilibrium will not cause a change in the phenotypes. C) the entire population of beetles could not be light brown because the beetles with a light brown phenotype are heterozygotes. D) the entire population of beetles could be light brown because the higher fitness in the light brown environment results in elimination of the homozygous genotypes."--
in a mutant e. coli strain, a protein that normally resides in the inner membrane is mis-localized to the cytoplasm. all other proteins show normal localization. the most probable defect in this mutant strain is that the . . . choose one: a. sigma factor that helps transcribe this protein is missing. b. signal recognition particle is missing. c. ribosomes in this cell are defective. d. amino terminal signal sequence is missing from this protein.
Answers
The correct answer is : The amino terminal signal sequence for this particular protein is missing.
The protein is guided toward membrane insertion by the signal sequence. Numerous distinct cell membrane proteins would be mislocalized if the signal recognition particle were absent. The protein would not exist if the sigma factor were absent. All protein synthesis would be affected if the ribosomes were damaged, potentially having fatal consequences for the cell.
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I need help on this
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what infection was sammy diagnosed with? why do you think she felt sick after taking the antibiotic pills?
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Sammy was diagnosed with a urinary tract infection (UTI). It's possible that she felt sick after taking the antibiotic pills because they may have disrupted her gut microbiome, which can cause side effects such as nausea, diarrhea, and abdominal pain. Additionally, antibiotics can also make some people feel tired or lethargic. However, it's important to note that if Sammy's symptoms persist or worsen, she should consult her doctor to rule out any other potential complications.
It is not provided which infection Sammy was diagnosed with. However, Sammy may have felt sick after taking antibiotic pills due to several reasons, such as an allergic reaction, side effects, or improper use of the medication. Antibiotics can sometimes cause nausea, vomiting, diarrhea, and other gastrointestinal issues.
Additionally, some people may be allergic to specific antibiotics, resulting in an adverse reaction. It is crucial to follow the doctor's prescription and discuss any concerns or side effects experienced during the treatment.
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Sammy was diagnosed with a urinary tract infection. It is possible that she felt sick after taking the antibiotic pills because they can sometimes have side effects such as nausea, vomiting, or diarrhea. Additionally, if the infection was severe, it could take some time for the antibiotics to start working and during that time, she may continue to experience symptoms such as fever, pain, and discomfort.
It is important for Sammy to continue taking her medication as prescribed and to speak with her healthcare provider if her symptoms persist or worsen.
It is not specified what infection Sammy was diagnosed with. However, if she felt sick after taking antibiotic pills, it could be due to side effects or an allergic reaction to the medication. Antibiotics can sometimes cause gastrointestinal issues like nausea, vomiting, or diarrhea. Additionally, if Sammy is allergic to the specific antibiotic prescribed, her body might react negatively, causing her to feel unwell. It is essential for Sammy to consult her healthcare provider about these symptoms to determine the cause and receive proper treatment.
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This ocean environment is
characterized by long plants that are rooted on the ocean floor but grow upwards toward the surface.
a. the kelp forest
b. pelagic zone
c. benthic zone
Answers
The ocean environment is characterized by long plants that are rooted on the ocean floor but grow upwards toward the surface as the kelp forest.
Thus, the correct answer is A.
What is the kelp forest?Kelp (order Lаminаriаles) аre lаrge brown seаweeds, with 30 different generа thаt live in cool wаters close to the shore. In order to grow, kelp will аttаch to the seа floor аnd will grow upwаrds towаrds the oceаn surfаce, relying on sunlight to generаte food аnd energy.
While kelp isn’t technicаlly а tree, kelp growths аre cаlled “kelp forests” becаuse they form dense groupings, tower аbove the oceаn floor, аnd perform mаny of the sаme ecosystem functions.
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What does Dickon do to show if a rose is alive or dead?
Answers
Dickon, a character in the book "The Secret Garden" by Frances Hodgson Burnett, is an expert gardener and has a keen eye for identifying whether a rose is alive or dead.
He looks for several signs to determine the plant's health. Firstly, he checks the stem for flexibility and firmness. A healthy stem should be pliable and have a slight resistance when bent. If the stem is rigid and brittle, it indicates that the plant is dead. Secondly, he inspects the leaves for color and texture.
Healthy leaves are green and glossy, while wilted and yellowed leaves indicate that the plant is dying. Finally, he looks for signs of new growth, such as buds and shoots.
If the plant is producing new growth, it means that it's alive and has the potential to flourish. By examining these factors, Dickon can accurately determine whether a rose is alive or dead.
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significance of photosynthesis
Answers
Answer:
Significance of Photosynthesis. Photosynthesis is the process by which green plants, in the presence of light combine water and carbon dioxide to form carbohydrates. Oxygen is released as a by product of photosynthesis.
Explanation:
only answer no explanation to save time. 1 to 5
Answers
Step 1. mRNA is transcribed in the nucleus, exits to the cytosol through, and binds to a ribosome.
Step 2. Protein synthesis occurs at the rough endoplasmic reticulum.
Step 3. The protein travels by vesicle from one organelle to another inside the cell.
Step 4. The Golgi apparatus processes, sorts, and tags the protein for delivery to its final destination.
Step 5. Exocytosis.
Scientists grow yeast in solutions of varying pH levels to determine the effect of pH on the rate of anaerobic respiration by measuring the quantities of product made by the yeast in each solution. Since yeast typically grow better in acidic environments, the scientists test a pH range of 3-6 with all other conditions held constant. They collect and plot the experimental data in a graph.
Answers
At a pH of 5, the concentration of ethanol is the greatest so alcoholic fermentation is taking place at a fastest rate.
What is pH?This is referred to as power of hydrogen and it is the measure of the acidity or alkalinity of a substance. pH of 7 is referred to as being neutral while pH of 1-6.9 is regarded as being acidic.
Fermentation on the other hand is a chemical process which involves the breakdown of glucose anaerobically. This means in the absence of oxygen and the product is ethanol which is how various types of beer are made in industries.
From the graph , we can deduce that the concentration of ethanol is highest at pH of 5. This therefore means that the alcoholic fermentation is taking place at a fastest rate and is therefore the reason why option C was chosen as the most appropriate choice.
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The melting of sea ice ______ (increases) (does not affect) (decreases) the density of the surrounding ocean water.
Answers
The melting of sea ice decreases the density of the surrounding ocean water.