Question

Earwax type is a Mendelian human trait. Specifically, wet earwax (W) is a dominant allele, and dry earwax (w) is a recessive allele. Given parents with Ww and ww genotypes, what is the probability that their child will have a wet earwax phenotype? Enter your answer as a percentage.

Answer 1

Answer:

Probability that child has wet earwax phenotype = 50 %

Step-by-step explanation:

To solve, we just need to look at the possible outcomes:

Wet Earwax Dominant allele : W

Dry Earwax Recessive allele : w

Parent 1 : W-w

Parent 2 : w-w

The possible outcomes are four:

W - w

w - W

w - w

w - w

Child having Wet earwax phenotype will have combination : W-w or w-W

Probability that child has wet earwax phenotype = $\frac{2}{4}$

Probability that child has wet earwax phenotype = $\frac{1}{2}$ = 0.5 or 50%