Question

16.
In a polygenic inheritance of skin colours
controlled by two gene pairs, how many
phenotypes, mulattoes and total progenies are
formed in F2,
(1) 3, 3, 16 respectively
(2) 5, 6, 16 respectively
(3) 7, 20, 64 respectively
(4) 7, 6, 16 respectively
​

Answer 1

Answer:3)7,20,64

Explanation:because there are three Pairs of polygene controlling the skin colour in human. By making the cross we would self breed the F1 generation and would get a ratio of 1:6:15:20:15:6:1. 20 is the mulatto and there are 7 phenotypes.

Answer 2

because there are three Pairs of polygene controlling the skin colour in human. By making the cross we would self breed the F1 generation and would get a ratio of 1:6:15:20:15:6:1. 20 is the mulatto and there are 7 phenotype