What is the allele frequency?

Biology

2 answers:

Alex2 years ago

7 0

Answer:

Explanation:

Allele frequency is the how often or what's the percentage of a particular allele in a population. Allele is referred to as version of a gene that is located on the chromosome.

For example, a gene causing death in rats might have alleles, W and w. Each would be a separate allele and the frequency would be how often or what's the percentage of W or w that is present in the population.

Suppose we are trying to find frequency of W or w allele in a population then the formula is

Allele Frequency = [# of copies of certain allele (either W or w)] / [Total number of W and w alleles]

Now suppose we have 4 WW and 2 ww in a population.

First we count up W allele then we have (4 * 2)= 8 W (we multiplied by 2 because each organism has WW, 4 WW is short of of writing WW , WW, WW, WW)
Same concept for 2ww, we have total w = 2 * 2 = 4w

Total alleles = W + w = 8 +4 =12

Allele Frequency for W = 8 / 12 = 66.67%

Allle Frequency for w = 4 / 12 = 33.33%

Hope this helps!

Sveta_85 [38]2 years ago

5 0

Allel frequency, or gene frequency, is the relative frequency of an allele at a particular locus in a population, expressed as a fraction or percentage. Specifically, it is the fraction of all chromosomes in the population that carry that allele

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