Question

what genotypes are observed when you cross a dd parent with another dd parent? a 75% dd and 25% dd b 50% dd and 50% dd c 25% dd, 50% dd, 25% dd d 100% dd

Explanation:

Step1: Set up Punnett - square

When crossing two Dd parents, the possible gametes from each parent are D and d.

Step2: Fill in Punnett - square

	D	d
d	Dd	dd

Step3: Calculate genotypes

There is 1 DD : 2 Dd : 1 dd. So the genotypes are 25% DD, 50% Dd, and 25% dd.

Answer:

C. 25% DD, 50% Dd, 25% dd