Question

4
a students mother has wet earwax (ee) and their father has dry earwax (ee). what is the probability that the student will have dry earwax?
a 100%
b 0%
c 25%
d 50%

Explanation:

Step1: Identify parental genotypes

Mother: $EE$, Father: $ee$

Step2: Determine gamete types

Mother's gametes: all $E$; Father's gametes: all $e$

Step3: Calculate offspring genotypes

Offspring will all be $Ee$ (wet earwax, since $E$ is dominant)

Step4: Find dry earwax probability

Dry earwax requires $ee$, which is impossible here.

Answer:

B. 0%