Question

In which one of the following, complementary gene interaction ratio of 9 : 7 is observed?

• A. Fruit shape in Shepherd's purse
• B. Coat colour in mouse
• C. Feather colour in fowl
• D. Flower colour in pea
• E. Four o'clock plant

Answer 1

Answer: (D)

Flower colour in pea

Complementary gene interaction occurs if both gene loci have homozygous alleles and both of them produce identical phenotype and the F2 ration become 9:7, in such cases genotypes can be aaBB, aaBb, Aabb, aabb produce one phenotype.

So, the correct answer is "Flower color in pea".