Question

A pea plant with yellow and round seeds is crossed with another pea plant with green and wrinkled seeds produced 51 yellow round seeds and 49 yellow wrinkled seeds. Genotype of plant with yellow round seeds must be ______
a) YYRr
b) YyRr
c) YyRR
d) YYRR

Answer 1

1. Maybe YYRr the correct answer

Answer 2

Hey dear,

◆ Answer - (a) YYRr

◆ Explanation -
We can easily deduce genotype of parent by offsprings.
1) For colour trait,
All seeds in F1 generation are yellow, which means given seed is homozygous for colour trait. i.e.YY
2) For shape trait,
Some seeds in F1 generation are round while some are wrinkled, which means given seed is heterozygous for shape trait. i.e. Rr

Thus, genotype of plant with yellow round seeds must be YYRr.

Hence, this is a dihybrid cross between yellow round seeds (with genotype YYRr) & green wrinkled seeds (with genotype yyrr).

Hope this helps you. Thanks for asking..