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Andreyy89
2 years ago
5

As natural selection acts on a trait in a population, how will the amount of variation associated with that trait in the populat

ion change________.
Biology
1 answer:
Orlov [11]2 years ago
4 0

Answer:

The amount of variation associated with a trait in a population changes because natural selection selects those alleles that are beneficial for the survival of the individual so it increase the frequency of beneficial alleles of a trait and eliminates those allele which reduce the reproductive fitness of an individual.

So the population which have traits that are non-beneficial will be eliminated by natural selection and the population with the beneficial variant trait are selected to live and reproduce to pass their offsprings.  

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Answer:

Long tail and narrow head.

Explanation:

A sperm cell is adapted to reduce friction as it swims by having long head, narrow tail and enzymes. These features of sperm provides ability to swim straight to the egg cell. Long tail helps the sperm cell to swim towards the egg cell, narrow head of sperm cell make the sperm cell for faster swimming towards the egg cell and enzymes present in the head of the sperm helps break through the egg cell membrane so we can say that the long tail and narrow head of sperm cells helps in faster swimming.

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2 years ago
Which of the following is not characteristic of a behavior?
Ksenya-84 [330]

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How do day-neutral and intermediate-day photoperiod plants differ in their requirements?
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Answer:

Photoperiod signifies towards the time that an animal or a plant gets exposed to light in a twenty-four-hour duration. Different types of plants need different durations of light exposure to follow their respective life cycles.  

On the basis of getting exposed to light differently, the plants are differentiated into short-day plants, long-day plants, day-neutral plants, and intermediate-day plants. The day-neutral plants will undergo flowering at any length of the day, given that there is the availability of minimum amount of light, which is essential for usual growth. For example, beans, tropical plants, cotton, and others.  

On the other hand, the intermediate-day plants will not flower if the days are too long or too short, like different varieties of grasses.  

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A red blood cell is placed into a sugar water solution. The red blood cell has a lower concentration of protein and sugar than t
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Becuase the cell has a lower concentration that the solution it is placed in, the solution is considered hypertonic. The cell will lose water through osmosis and will shrink, the 2nd option is correct.

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Explanation:

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