On the planet Trifecta, there is an autosomal dominant condition known as Talbot

Question

On the planet Trifecta, there is an autosomal dominant condition known as Talbott. Individuals with this condition enjoy gambling on jellyfish races.

A study of a 1000 Trifectoids homozygous for the trait allele T indicate that 750 show the Talbott phenotype. A further study of 1000 heterozygote Trifectoids shows that 400 show the Talbott phenotye. Homozygous wild-type Trifectoids (tt) never show the phenotype.

In a cross of TT male with a tt female, two arbitrary F1 are crossed to produce a large number of F2 offspring.

What is the probability that an F2 offspring shows the Talbott phenotype?

A. 0.613

B. 0.5

C. 0.75

D. 0.0

E. 0.388

Explanation / Answer

The probability of Talbolt phenotype in the F2 generation is 0.388 I.e answer of this question is (E).

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