Question

In a pea plant (Pisum sativum), green pod colour is dominant over yellow pod colour. The expected ratio of the phenotypes of the offsprings (F$_1$) in a cross between parents with heterozygous green pod colour and homozygous yellow pod will be:

• A. 1 : 1
• B. 2 : 1
• C. 3 : 1
• D. 4 : 1

Hint:

A cross between heterozygous dominant and homozygous recessive always gives a 1:1 phenotypic ratio.

Answer 1

The Correct Option is A

Cross: Gg × gg

Gametes	Offspring
G	Gg (Green)
g	gg (Yellow)

Phenotypic ratio = 1 Green : 1 Yellow