Question

Test cross ratio in case of duplicate gene
action will be
(a) 1:1
(b) 1:1:1
(c) 3:1
(d) 1:3​

Answer 1

Answer:

1:3 ...

hope it helps you ☺️

Answer 2

(c) 3:1 is the right answer

Explanation:

Because either of the genes can provide the wild type phenotype, this interaction is called duplicate gene action. ... The normal ratio from selfing dihybrid is 9:3:3:1, but epistatic interactions of the C and P genes will give a modified 9:7 ratio.