Question

Which one shows complementary gene interaction ratio of 9 : 7?

• A. Four O'clock plant
• B. Feather colour in Fowl
• C. Flower colour in Sweat Pea
• D. Fruit shape in Shepherd's purse
• E. Coat colour in Mouse.

Answer 1

The correct option is C Flower colour in Sweat Pea

A.Four O’ clock plant – Incomplete dominance – 1:2:1

B.Feather colour in Fowl – Supplementary genes – 9:3:4

C.Flower colour in Sweat Pea – Complementary genes – 9:7

D.Fruit shape in Shepherd’s purse – Duplicate genes – 15:1

E.Coat colour in Mouse – Lethal genes – 1:2

So, the correct option is ‘Flower colour in Sweat Pea’.