In pea plants, round is dominant over wrinkled. A homozygous round seed−producing plant is crossed with a homozygous wrinkled seed−producing plant. What percent of the offspring would be expected to have round seeds?Answer options with 5

Answer 1

In pea plants, round seeds (R) are dominant over wrinkled seeds (r). If a homozygous round seed-producing plant (RR) is crossed with a homozygous wrinkled seed-producing plant (rr), all the offspring will inherit one round seed allele from the round parent and one wrinkled seed allele from the wrinkled parent.

Here's the cross:

• Parent 1 (RR) x Parent 2 (rr)

The possible gametes from each parent are:

• Parent 1 can produce gametes: R
• Parent 2 can produce gametes: r

The offspring's genotype will be:

• Rr (all offspring will have this genotype)

Since R (round) is dominant over r (wrinkled), all offspring (100%) will display the round phenotype.

Therefore, the expected percentage of offspring with round seeds is 100%.