QuestionJune 4, 2025

What is the probability of the parents having a child that is.heterozygous for this trait? 0% 25% 75% 100%

What is the probability of the parents having a child that is.heterozygous for this trait? 0% 25% 75% 100%
What is the probability of the parents having a child
that is.heterozygous for this trait?
0% 
25% 
75% 
100%

Solution
3.8(280 votes)

Answer

50\% Explanation 1. Identify Parent Genotypes Assume both parents are heterozygous (Aa) for simplicity. 2. Construct Punnett Square Create a 2x2 grid with each parent's alleles on the top and side. The combinations are AA, Aa, Aa, aa. 3. Calculate Probability of Heterozygous Offspring Count the number of Aa combinations. There are 2 out of 4 possibilities. 4. Determine Probability Probability = \frac{\text{Number of Aa}}{\text{Total Combinations}} = \frac{2}{4} = 50\%.

Explanation

1. Identify Parent Genotypes<br /> Assume both parents are heterozygous (Aa) for simplicity.<br /><br />2. Construct Punnett Square<br /> Create a 2x2 grid with each parent's alleles on the top and side. The combinations are AA, Aa, Aa, aa.<br /><br />3. Calculate Probability of Heterozygous Offspring<br /> Count the number of Aa combinations. There are 2 out of 4 possibilities.<br /><br />4. Determine Probability<br /> Probability = $\frac{\text{Number of Aa}}{\text{Total Combinations}} = \frac{2}{4} = 50\%$.
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