Suppose a mother carries two recessive genes for freckles (rr) and a father carries one recessive gene for freckles and one dominant gene for clear facial skin (Rr). What is the likelihood that their first child will have freckles?
A)
1
2
B)
1
4
C)
3
4
D)
4
4
Answer - A The ratio of a child with clear skin with that of freckled skin is 1:2. When genotype rr mates with genotype Rr, the following genotypes are expected: Rr = clear skin dominant rr= freckled skin
