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shutvik [7]
3 years ago
7

What causes genetic variation in a population

Biology
1 answer:
Gre4nikov [31]3 years ago
8 0

Answer:

A lot of factors cause genetic variation in a population. The root of all genetic variation is mutations, which occur randomly.

A lot of genetic variation in fact results during meiosis, the process by which gametes (sex/reproductive cells) are formed. The 3 main ways are crossing over, independent assortment of chromosomes, and random fertilization. Crossing over occurs during Prophase I of meiosis, in which genetic material is exchanged between nonsister chromatids of homologous chromosomes. Independent assortment refers to the following: When cells divide during meiosis, homologous chromosomes are randomly distributed during anaphase I, separating and segregating independently of each other.  Random fertilization is where any sperm can fertilize any egg cell. The many combinations of eggs and sperms mean variation.

Another source of genetic variation include gene flow. Gene flow is where populations have their members enter other populations (migration), influencing the gene pool of populations. This source is more controversial, however.

Random mating can also increase genetic variation.

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7 0
3 years ago
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Please help!!!!!!!!!!!!!
snow_lady [41]

Answer:

A

Explanation:

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6 0
2 years ago
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bezimeni [28]

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Finger [1]
I think this is what you are referring to.

Hope this helps.

5 0
3 years ago
Please Help Mark and Vikki live in two different areas of North America. The temperature in Mark’s town today is 30°F. The tempe
uysha [10]

Answer:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

Explanation:

I assume there could be a change in water vapour in the weather as the coldness and the clouds in the city of Mark will transform into ice and fall like snow. And it is really warm in the town of Vikki, and the vapour of water may fall as rain.

See above

Please mark brainliest

<em><u>Hope this helps.</u></em>

6 0
3 years ago
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