Question

in garden peas, round seeds (r) is dominant over wrinkled seeds (r). a cross was made between two heterozygous round seeded plants. which should be the expected genotypic ratio in the seeds produced by this cross? 1rr: 1rr 1rr: 2rr: 1rr 1rr: 1rr: 1rr 3rr: 1rr

Explanation:

Step1: Determine parent genotypes

The parents are heterozygous round - seeded plants, so their genotypes are Rr.

Step2: Set up Punnett - square

Create a 2x2 Punnett - square. The possible gametes from each parent are R and r.

	R	r
r	Rr	rr

Step3: Analyze genotypes

From the Punnett - square, we have 1 RR: 2 Rr: 1 rr.

Answer:

1RR: 2Rr: 1rr