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Black_prince [1.1K]
4 years ago
10

______ is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.

Biology
2 answers:
Zepler [3.9K]4 years ago
7 0

Answer:

crossing over

Explanation:

This occurs between prophase 1 and metaphase 1.

OverLord2011 [107]4 years ago
6 0

Recombination is a source of genetic variation that involves the swapping of sections of chromosomes during meiosis.

<u>Explanation:</u>

Cell division is of 2 types one is the mitosis division of body cells and meiosis that is division of germ cell. The meiosis involves production of haploid gametes, these gametes fuse with each other and form a diploid zygote, and accordingly the formation of gametes involves the mixing of 2 different cells with homologous chromosomes.

Recombination is the result of crossing over of cells. When these cells fuse they give rise to a new gamete with characters mixed from both the cells.

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We know that Hardy-Weinberg conditions include the following equations:


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And where p = dominant, and q = recessive; this means that p^{2} is equal to the homozygous dominant, 2pq is the heterozygous, and q^{2} is the homozygous recessive .


So we have 100 total cats, with 4 having the recessive white coat color. That means we have a ratio of \frac{4}{100} or 0.04. Let that equal our q^{2} value.


So when we solve for q, we get:


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This is the ratio of the population. So we then multiply this number by 100 to get the number of cats that are heterozygous:


0.32*100=32cats


So now we know that there are 32 heterozygous cats in the population.

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