Question

A pea plant with the genotype YyRr is crossed with another pea plant with the genotype yyrr. The expected phenotypic ratio of individuals formed will be ______

Options

• 1:2:1

• 1:1:1:1

• 1:1:2

• 2:1:1

Answer 1

A pea plant with the genotype YyRr is crossed with another pea plant with the genotype yyrr. The expected phenotypic ratio of individuals formed will be 1:1:1:1.

Explanation:

YyRr × yyrr is an example of a dihybrid test cross that produces 4 different combinations YyRr, Yyrr, yyRr, yyrr in ratio 1 :1 :1 :1.