the punnett square shows the possible genotype combinations of two parents who are heterozygous for a…

the punnett square shows the possible genotype combinations of two parents who are heterozygous for a particular trait. what is the probability of the parents having a child who is homozygous dominant for this trait? 0% 25% 50% 75%

the punnett square shows the possible genotype combinations of two parents who are heterozygous for a particular trait. what is the probability of the parents having a child who is homozygous dominant for this trait? 0% 25% 50% 75%

Answer

Explanation:

Step1: Identify total outcomes

There are 4 possible genotype combinations in the Punnett - square.

Step2: Identify favorable outcomes

The homozygous dominant genotype is YY, and there is 1 YY combination.

Step3: Calculate probability

Probability = $\frac{\text{Favorable outcomes}}{\text{Total outcomes}}=\frac{1}{4}=0.25 = 25%$

Answer:

25%