mainly looking for an explanation on how to obtain the frequency of the trait in

Question

mainly looking for an explanation on how to obtain the frequency of the trait in females.

ng in groups on this assignment. If students work together, for grading. On a fantasy island, slightly over 80% of the males are found to have blue, black, and white stripes on their bodies, while less than 10% of the females have this same trait. What form of transmission might exist for this trait, if it were similar in humans? What is the best statistical estimate for the frequency of this trait in the females of this island?

Explanation / Answer

On a fantasy island slightly over

80% ---------------- males ------------------ blue, black and white stripes

Less than 10% ---------------- females ----------------------------------- black and white stripes –

Recessive X-linked traits are more frequent among males than among females.

This indicates --------------X- linked recessive mode of inheritance

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Frequency of X- linked recessive allele

frequency of an x-linked recessive in males is thus equal to the frequency of the allele in this population

frequency of heterozygous carrier females is twice the frequency of affected males, or 2q

q^2==recessive homozygotes female=

p^2=0.8

p=0.89------abnormal allele

q=1-0.89=0.11

q^2==recessive homozygotes female=0.11 x0.11=0.0121

2pq= heterozygous carrier females =2 x 0.89 x 0.11=0.1958

=R+ H/2=

=0.0121 +0.1958/2=0.11-answer

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