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Can someone please help with this bio question.?

In a population of 10,000 individuals, allele B is dominant over allele b, the number of individuals with genotype BB= 5000, Bb= 4700 and bb= 300.

1) What is the frequency of the BB genotype in the population.

2)What is the frequency of individuals with one or more recessive alleles in the population?

3)What would be the phenotypic frequency of the recessive phenotype?

4) What is the allele frequency of allele B?

1 Answer

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  • 9 months ago
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    Yes

    1. freq(BB) = 5000/10000 = 0.5 (answer)

    2. freq(Bb + bb) = (4700 + 300)/10000 = 0.5 (answer)

    3. freq(bb) = 300/10000 = 0.03 (answer)

    4. This is a "count the alleles" question. There are 20,000 alleles total in the population. Add up the B alleles and divide by 20000.

    Freq(B) = (5000 + 5000 + 4700) / 20000 = 14700 / 20000 = 0.735 (answer)

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