Question

In man browser (B) are dominant to blue (b) and dark hau (R) dominant to red hair). A man with brown
eyes and red bar(whose father was blue eyed) marries a woman with blue eyes and dark hair (but whose mother
was red haired). They have our children. Give the phenotypes and genotypes of the parents and children
What is cpistasisHow does it differ from dominance?
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Answer 1

Answer:

Hey

Let Brown eye dominant(B)

Blue eye recessive(b)

Dark Hair(D)

Red Hair(d)

Explanation:

now man has brown eyea and red hair whose father has blue eyes

therefore genotype of man is Bbdd

Women Has blue eyes and dark hair whose mothes was red haired

therefore genotype of Women is bbDd

genotype of children are

Bbdd×bbDd

this willgive genotypic ratio of 1:2:3:2:1

and phenotypic ratio od 9:3:3:1