13. an allele is: a) another word for a gene b) a homozygous genotype c) a phenotype d) one of several possible forms of a gene
Answers
An allele represents one of the various alternative forms that a gene can take within a population. Therefore, option D is the correct answer.
Alleles can exhibit variation in their DNA sequences, resulting in diverse versions of a gene. These variations can give rise to observable differences in traits, such as eye color, hair texture, or blood type. For instance, the gene responsible for determining eye color can have alleles that correspond to blue, green, or brown eyes.
The expression of alleles can be influenced by their dominance or recessiveness. Dominant alleles are capable of masking the effects of other alleles, while recessive alleles are only expressed when paired with another recessive allele. This interaction between alleles is important in understanding inheritance patterns and the transmission of genetic disorders within families.
Individuals possess two alleles for each gene, one inherited from each parent, and this combination of alleles constitutes their genotype. The genotype, in turn, contributes to the individual's phenotype, which encompasses their observable traits.
In summary, alleles are distinct forms of a gene that arise from genetic variations and can determine the traits exhibited by individuals. Understanding the concept of alleles is fundamental in comprehending the genetic basis of traits and the inheritance patterns of genetic disorders. Therefore, option D accurately represents the nature and significance of alleles.
know more about allele here;
https://brainly.com/question/25970081
#SPJ11
Related Questions
What is the climate of the coniferous forest biome?
long, rainy summers and short, extremely cold winters
no distinct seasons; cold and snowy all year around
short, humid summers and long, harsh winters
four separate seasons with precipitation falling equally in each season
Answers
Answer:
short, humid summers and long, harsh winters
Explanation:
Got it right on my quiz.
If these examples are density independent or dependent limiting factor
Answers
In ecology, density is a measure that refers to how many individuals a population has in a specific habitat.
Considering this, we can say that water is a density-dependent limiting factor, since this is a limited resource that can vary its availability annually, but also is a species have too many individuals, all of them will not have the same capacity to reach this resource, especially when we talk about large animals or plants.
Diseases caused by bacteria would be also a density-dependent limiting factor, since only when too many microorganisms of a pathogenic species replicate in our bodies, do we begin to feel the symptoms of that illness.
Predators are also a density-dependent limiting factor since the species which they feed on can be overhunted by them, being reduced in number of individuals, or being not too much hunted and increase their individuals.
Earthquakes are a density-independent limiting factor, since they do not depend on other factors to occur, but only on the movement of our planet's plates.
Finally, limits population regardless of how many organisms are present in the area is a density-independent limiting factor, since they do not depend on how many organisms they're to limit the increase of the population. Being this option an abiotic kind of non-limiting factor.
Which of the following would be classified as a renewable resource?
O A barrel of oil that would take 8 million years to form.
A large piece of coal that would take 4 million years to form.
O Solar rays from the Sun that take 8 minutes to reach the Earth.
O Methane gas from the ocean floor that takes 7 thousand years to outgas.
Answers
An unknown specimen was grown on Indole media. Based on your observation of this specimen choose the appropriate statements.
A. This test is a part of the IMViC panel of tests
B. The organism tested converts tryptophan to indole.
C. This media is inoculated by stabbing the agar in the tube.
D. This is a picture of a negative test result.
E. This is a picture of a positive test result.
F. The organism tested fermented indole.
Answers
Here are the appropriate statements about an unknown specimen grown on Indole media based on your observation: B. The organism tested converts tryptophan to indole.C. This media is inoculated by stabbing the agar in the tube.E. This is a picture of a positive test result.F. The organism tested fermented indole.
The indole test is used to determine an organism's ability to decompose the amino acid tryptophan into indole. The indole production is detected by adding Kovac's reagent, which contains p-dimethylaminobenzaldehyde, to the medium after incubation.
Tryptophan is an amino acid that is the precursor to indole production in this test. The amino acid tryptophan is a prerequisite for indole production. It is for this reason that organisms that can break down tryptophan into indole are positive.
This is the appropriate response to the student's question:
An unknown specimen was grown on Indole media. Based on your observation of this specimen choose the appropriate statements. B. The organism tested converts tryptophan to indole.C. This media is inoculated by stabbing the agar in the tube.E. This is a picture of a positive test result.F. The organism tested fermented indole.
To know more about specimen refer to-
brainly.com/question/31248655#
#SPJ11
what type of asexual reproduction is an Ivy plant?
Answers
Answer:
The correct answer is - vegetative propagation.
Explanation:
Asexual reproduction is a process of reproduction that does not involve spore or eggs or does not form a zygote and produce a new plant or organism. There are many types of asexual reproduction such as binary fission, fragmentation, propagation, and budding.
Ivy plants reproduce by propagation which is the process that involves the rising new plants by any part of the old plant by putting it in soil and water. It is a type of asexual reproduction similar to regenration.
Compare photosynthesis and cellular respiration. In what types of cells do these processes occur?
Answers
Answer:
photosynthesis occur in the chloroplasts ,cellular respiration occurs in the mitochondria
Explain the relationship between ethics and good work habits.
Answers
Answer:
In a business, an ethical code is a defined set of principles which guide an organization in its activities and decisions and the firm's philosophy may affect its productivity, reputation, and bottom line. ... An ethically positive, healthy work culture enhances morale among employees.
Answer:
In a business, an ethical code is a defined set of principles that guide an organization in its activities and decisions and the firm's philosophy may affect its productivity, reputation, and bottom line. An ethically positive, healthy work culture enhances morale among employees.
Explanation:
When a cell uses chemical energy to perform work, it uses the energy released from a(n) ________ reaction to drive a(n) ________ reaction.
A. endergonic; exergonic
B. exergonic; spontaneous
C. spontaneous; exergonic
D. exergonic; endergonic
Answers
D. When a cell uses chemical energy to perform work, it uses the energy released from a(n) exergonic reaction to drive a(n) endergonic reaction.
The cell conducts an endergonic reaction using the energy produced during an exergonic reaction. While endergonic processes need energy input to continue, exergonic reactions are spontaneous and release energy. Endergonic reactions are propelled ahead by the energy generated by exergonic processes. The process of ATP hydrolysis serves as an illustration of this since the exergonic breakdown of ATP releases energy that powers endergonic cellular functions including muscle contraction, protein synthesis, and active transport of molecules across cell membranes.
learn more about cell conducts here:
https://brainly.com/question/28238276
#SPJ11
From the bacterium's perspective, what are the advantages of endospore formation?
A.endospore allows faster cell replication
B.endospores are highly resistant to radiation and heat
C.endospore provides protection in dry conditions
D.endospore is more resistant to disinfectants
E.endospore provides cell shape
Answers
The advantages of endospore from the perspective of a bacterial cell are that it provides resistance to disinfectants, heat and radiation and also protection in dry conditions.
The correct options are options b, c and d.
An endospore is basically a dormant, tough, as well as a non-reproductive structure which is produced by some of the bacteria who belong to the phylum Bacillota. The name endospore basically means a spore or a seed-like form. Endospore although is not truly a spore. We can say that it is basically a dormant form to which a certain bacterium basically can reduce itself.
The endospore provides resistance to the radiation, heat as well as disinfectants. It also protects the cell in dry conditions.
To know more about endospore
https://brainly.com/question/247607
#SPJ4
Which of these is an important reason for sleep? Sleep increases blood flow to the muscles. Sleep saves energy. Sleep increases blood flow to the brain. Sleep increases the speed of all the body's chemical reactions.
Answers
Sleep is an important aspect of human life. It is a natural and essential requirement for the body to function effectively. There are numerous reasons why people need to sleep. However, one of the significant reasons for sleep is that it increases blood flow to the brain.
Sleep plays a vital role in the overall functioning of the human body. During sleep, the brain can rest, recuperate and repair itself. During this time, the brain gets an opportunity to reorganize, consolidate and store information that is important to the individual.Sleep is also important because it saves energy. When an individual sleeps, their body is in a state of rest, which means that the body is not using as much energy as it would if it was active. This is why people often feel refreshed and rejuvenated after a good night's sleep.Sleep also increases the speed of all the body's chemical reactions.
While asleep, the body continues to perform various essential functions, such as the regulation of hormones and the elimination of toxins. Furthermore, sleep promotes the growth and repair of tissues, including muscles. It is also important to note that during sleep, the immune system is boosted, which helps fight off infections and diseases.In conclusion, sleep is essential to maintaining good health and wellbeing. It has numerous benefits for the brain, the body, and the overall functioning of human beings.
To know more about Sleep visit:
https://brainly.com/question/2445646
#SPJ11
What is convection current?
Answers
Answer:
Convection currents transfer heat from one place to another by mass motion of a fluid
Explanation:
Answer:
Convection currents are movements caused by temperature changes in liquid or gaseous bodies. In such bodies, warmer material tends to rise, displacing cooler matter, which is circulated elsewhere; the continuous movement created by this process is known as a convection cell.
Explanation:
6. Critical Thinking
and Contrasting How is the
structure of chromosomes in
eukaryotes different from the
structure of chromosomes in
prokaryotes?
Answers
Babies with very low or very high birth weight are less likely to survive. The graph shows the percentage of babies born at different weights. A graph entitled Percentage of Babies born at Different Weights has weight in pounds on the horizontal axis, and percentage on the vertical axis. A small percentage of babies are born at the low and higher birth weights, and a greater amount are around 7 to 8 pounds. Which statement is a valid claim that could be made using the data in the graph? Directional selection is occurring because the graph favors an extreme. Stabilizing selection is occurring because the average is favored. Disruptive selection is occurring because the two extremes are favored. Biodiversity variation is occurring because there is an increase in trait variation.
Answers
Answer:
Stabilizing selection is occurring because the average is favored.
Explanation:
There are different types of natural selection: sexual selection, stabilizing selection, directional selection, frequency-dependent selection, and disruptive selection.
Balancing selection, also called Stabilizing selection, eliminates individual with extreme traits and favors individual that exhibit medium-range characteristics, that gets to survive.
In the exposed example, babies with very low or very high birth weight have fewer possibilities to survive. Stabilizing selection eliminates individuals with extreme weight and favors individuals that exhibit medium weight, which are the ones that get to survive.
Answer: C.
Explanation:
edge 2021
Biomes are communities of plants and animals defined by the climate & dominant vegetation. How does the stomata structure connect the climate & dominant vegetation?
Answers
Stomata are tiny pores found on the leaves of plants. They are responsible for regulating gas exchange between the atmosphere and the plant.
What are Biomes?
Biomes are large-scale ecosystems that are characterized by their climate, plant life, and animal life. They are determined by the average temperature and amount of precipitation in the region. Examples of biomes include tropical rainforest, desert, grassland, tundra, and temperate deciduous forest.
As climate changes, the size of the stomata changes to adapt to the new conditions. This affects the rate of water loss, carbon dioxide absorption and oxygen release. As a result, the size of the stomata can influence the dominant vegetation in an area, since plants require specific amounts of light, water and carbon dioxide to survive. This connection between stomata structure and climate can help explain why certain plants are only found in certain biomes.
To know more about Biomes,
https://brainly.com/question/1930321
#SPJ1
__________ released into the blood by the body cells tend to lower the pH of the blood and cause it to become acidic.
Answers
carbon dioxide (CO2) released into the blood by the body cells tend to lower the pH of the blood and cause it to become acidic.
One carbon atom is covalently doubly bound to two oxygen atoms in each of the molecules that make up carbon dioxide, which has the chemical formula CO2. Atmospheric CO2 is the main source of carbon for life on Earth since it is a gas at room temperature and a source of readily accessible carbon in the carbon cycle. In the atmosphere, carbon dioxide serves as a greenhouse gas because it absorbs infrared radiation despite being transparent to visible light. Groundwater, lakes, ice caps, and ocean all contain dissolved carbon dioxide. As atmospheric CO2 concentrations rise, carbon dioxide dissolves in water to create carbonate, mostly bicarbonate (HCO 3), which contributes to the acidification of the ocean.
To know more about carbon dioxide (CO2)
https://brainly.com/question/21185633
#SPJ11
In cats, green eyes (G) is dominant to yellow eyes (g). What is the genotypic ratio of the following cross? Gg x Gg
Answers
Answer:
GG:Gg:gg = 1:2:1
Choose all that explain why carbon is so important to life.
Carbon (C) appears in the second row of the periodic table and has four bonding electrons in its valence shell.
Carbon can form ionic bonds when combining with metals and covalent bonds with nonmetals.
Carbon can bond to itself in many different ways: chains, rings, branched chains.
Hydrocarbons contain only carbon, hydrogen, and oxygen.
Carbon can form single, double or triple covalent bonds.
Because carbon can bond in so many different ways, a single molecule can have different bonding configurations or isomers.
Answers
Answer:
A, C and D
Explanation:
It creates no ionic bonds because it would need certain changes to it.
Im not so sure about E because the configurations are very similar.
And A seems to make sense because its essential to life itself.
Answer:
A, C, E, F, For USA Test Prep
Explanation:
I got 100% on it. So yeah.
the main function of melanin pigment is to protect the of keratinocytes from uv radiation.
Answers
Answer:
Yes actually
Explanation:
Melanin is the way cells protect themselves from even more damage to the DNA caused by UV rays of the sun.
Homeostasis is classified under which of the following?
Answers
Homeostasis is classified under cell regulation. The correct option is C.
What is cell regulation?Any procedure that manages the sequence of activities a cell goes through during the cell cycle A cell divides in two and copies its DNA and other internal components during the cell cycle.
The stable internal, external, and chemical conditions that are maintained by living systems are known as homeostasis in biology.
Secreted proteins and tiny molecules that frequently serve as signals are responsible for controlling homeostasis in an organism or colony of single-celled organisms.
The management of the cell's homeostasis as well as the exchange of resources and energy with its environment help to keep it in balance.
Thus, the correct option is C.
For more details regarding homeostasis, visit:
https://brainly.com/question/3888340
#SPJ1
A. Cell respiration
B. Transcription
C. Cell regulation
D. Photosynthesis
the brain area that influences the secretion of melatonin is the
Answers
The brain area that influences the secretion of melatonin is the suprachiasmatic nucleus (SCN).
The brain area that influences the secretion of melatonin is the suprachiasmatic nucleus (SCN), which is located in the hypothalamus. The SCN plays a crucial role in regulating the sleep-wake cycle and is responsible for adjusting melatonin production based on changes in light and dark cycles.
The pineal gland, a small endocrine gland deep within the brain, is responsible for synthesizing and releasing melatonin. The SCN receives information about light exposure from the eyes and sends signals to the pineal gland to adjust melatonin secretion accordingly.
When it is dark, the SCN signals the pineal gland to increase melatonin production, promoting sleepiness. In contrast, when it is light, the SCN inhibits melatonin production, promoting wakefulness.
Learn more:
About brain area here:
https://brainly.com/question/32544970
#SPJ11
The brain area that influences the secretion of melatonin is the pineal gland.
The pineal gland is a small endocrine gland in the vertebrate brain that produces and secretes melatonin, a serotonin-derived hormone involved in regulating sleep/wake cycles, circadian rhythm, and other physiological processes.
Melatonin is a hormone that is produced and secreted by the pineal gland in response to changes in light exposure.
It plays an important role in regulating sleep/wake cycles, circadian rhythm, and other physiological processes. Melatonin is commonly used as a dietary supplement to help improve sleep quality and treat certain sleep disorders.
To know more about Brain visit:
https://brainly.com/question/11950231
#SPJ11
Migration is
a. the movement of organisms from a native location to a foreign location
b. the movement of organisms from a foreign location to a native location
c. the movement of organisms from their water supply to their food supply
d. the seasonal movement of organisms between locations
Answers
Answer: d. the seasonal movement of organisms between locations.
Explanation: Migration always refers to seasonal changes
gland that secretes through ducts to the surface of an organ or tissue or into a vessel
Answers
Exocrine glands are those glands that secrete substances into vessels or to the surface of organs or tissues through ducts. Sweat glands, salivary glands, and the pancreas are a few exocrine gland examples.
What are hormones?Hormone, are naturally occurring molecule secreted by both plants and animals that controls physiological processes and sustains homeostasis. Hormones work by inducing responses in particular organs or tissues that have been developed to respond to very small amounts of them. According to the traditional theory of hormones, after leaving the glands that secrete them and entering the bloodstream, hormones go to their targets. Endocrine secretion is the term used to describe this method of release (direct bloodstream entry).
What are endocrine glands?The bodily tissues or organs known as endocrine glands secrete chemicals (hormones) into the blood. The hypothalamus, pineal, and adrenal glands are typical endocrine glands. To reach their intended destination, hormones are secreted directly into the bloodstream or into the intercellular space by endocrine glands.
To know more about hypothalamus, visit;
https://brainly.com/question/9113672
#SPJ1
If you ate 2 grams of fat, how many
calories would you be eating?
8
9
9000
18
Answers
Answer:18
Explanation:
Of these six nutrients, carbohydrates, protein and fats provide calories. Each gram of carbohydrate and protein yield 4 calories/gram. Each gram of fat yields 9 calories.
Answer: 9
Explanation: 9
How much of the suns radiation does earth receive?
Answers
Answer:
The Earth receives about 71% of the suns radiation. About 29% of that radiation is actually reflected back into space.
Explanation:
Hope this helps:)
Which structural feature allows lipids to insulate and waterproof an organism
Answers
Lipids are a class of biomolecules that include fats, oils, waxes, and steroids. They are essential components of living organisms, playing important roles in energy storage, membrane structure, and signaling.
In general ,Lipids also serve as a long-term energy storage molecule in the body. When the body needs energy, stored lipids are broken down into their constituent fatty acids and glycerol, which can then be used by cells to generate ATP, the energy currency of the cell.
Also, hydrophobic nature of lipids is due to the long chains of hydrocarbon molecules that make up their structure. Hydrophobic means "water-fearing," and molecules that are hydrophobic do not mix with water. In animals, the insulation layer of fat that surrounds organs and lies just beneath the skin helps maintain body temperature by reducing heat loss.
To learn more about lipids , here
brainly.com/question/3498396
#SPJ4
Help please! I’ll cashapp if I have too
Answers
Matching. Select the appropriate definition for each vocabulary word
18. Sexual Reproduction
A. growing back a missing part
19. Regeneration
B. requires only 1 parent and produces offspring
with genes uniform to the parent.
20. Vegetative Propogation
21. Binary Fission
22. Budding
23. Asexual Reproduction
C. requires 2 parents and produces offspring
genetically diverse from either parent
D. part of a plant is separated from the parent
and grows into a new identical plant
E. a single-celled organism divides into two
daughter cells with identical DNA in each new
organism.
F. section of an organism grows and seperates
from the original parent
Answers
(18.) C (19.) A (20.) D (21) E (22.) F (23.) B are correct matching for the given question.
What is organism?An organism is a living being that has distinct characteristics and can perform various functions necessary for survival. Here are some key points about organisms:
Organisms can be single-celled or multicellular.
They have the ability to grow, reproduce, and respond to their environment.
Organisms can be classified based on their characteristics and features, such as their cell type, body structure, and method of reproduction.
They can be found in diverse environments and ecosystems.
Organisms can be categorized into different groups, such as plants, animals, fungi, and microorganisms.
Organisms interact with each other and their environment, forming complex relationships and ecosystems.
Organisms have evolved over time to adapt to their environment, leading to the diversity of life on Earth.
To learn more about organism refer:
brainly.com/question/17259533
#SPJ1
What is an allele?
A.The gene for a specific trait.
B.One of 2 copies of a gene.
C.The same thing as a gene
Answers
Answer:
B
Explanation:
the answer is .A........
form myelin sheaths around the axons of cns neurons
Answers
The innermost sheet-like glial process in touch with the axon spirals around it and spins out several overlapping membrane layers to generate myelin sheath in the PNS (peripheral nervous system) and CNS.
Schwann cells within the peripheral nervous system (PNS) and neural stem cells in the central nervous system both contribute to the formation of myelin (CNS). A singular myelin sheath is formed by a Schwann cell surrounding an axon.
A protective layer or sheath called myelin develops around nerves, including those located in the brain and spinal cord. It is composed of fat and protein components. Electrical impulses may move swiftly and effectively along nerve cells thanks to the myelin coating. These impulses decelerate if myelin is compromised.
The inner turn of the glial biological membranes spirals from around the axon to add membrane layers to the myelin sheath as the Schwann cell wraps its plasma membrane coaxially around the inner axon, keeping the nucleus fixed.
Learn more about myelin sheath here:
https://brainly.com/question/30030061
#SPJ4
How can ultrasound check for cracks in metal?
Answers
Answer:
The newly developed SONOSCAN angle probes of SONOTEC for non-destructive material testing check metals for cracks and inclusions. They are mainly used in the metal industry. The ultrasonic probes are able to detect critical defects as well as quality deficiencies of welds.
Explanation:
hope it helps please mark me as a brainliest please m
Answer:Computers are able to create detailed images by combining many ultrasound reflection readings
Explanation: