Question

When two genes control single character and have cumulative effect, the ratio is ______
a) 1:1:1:1
b) 1:4:6:4:1 c) 1:2:1 d) 1:6:15:20:15:6:1.

Answer 1

the right answer is

1:4:6:4:1

thnx bro

Answer 2

Welcome Pranjal,

◆ Answer - (b) 1:4:6:4:1

When two genes control single character and have cumulative effect, the ratio is 1:4:6:4:1.

◆ Polygenic inheritance -

- Two or more genes controlling a single trait in an individual are called polygenes. This type of inheritance is called polygenic inheritance.

- For example, height, weight, skin colour, hair, etc are controlled by multiple genes.

- Ratio of F1 generation in polygenic inheritance is 1:4:6:4:1.

Hope this helped you. Thanks for asking..