Question

When a pea plant heterozygous for round
seeded plant is self crossed, then 900
offsprings having round seeds are obtained
What is the number of offsprings
heterozygous for round seeds?​

Answer 1

Explanation:

ANSWER

As pea plant is heterozygous for round shape, its genotype would be Rr.

Parents: Rr x Rr

Progeny: RR Rr Rr rr

Phenotypically, the ratio will be 3:1. i.e., only rr seeding will show wrinkled phenotype, rest will show round shape. When the total number of seed is 1600 so

1200 - Round shape (RR, Rr)

400 - Wrinkled (rr).

Thus, the correct answer is option

Answer 2

As pea plant is heterozygous for round shape, its genotype would be Rr.

Parents: Rr x Rr

Progeny: RR Rr Rr rr

Phenotypically, the ratio will be 3:1. i.e., only rr seeding will show wrinkled phenotype, rest will show round shape. When the total number of seed is 1600 so

1200 - Round shape (RR, Rr)

400 - Wrinkled (rr).