5. The family tree below shows the trait of having attached earlobes. Having attached earlobes is recessive, and having detached earlobes is dominant. People with attached earlobes are shaded in
1.
II.
CHO
a) Describe the sex and characteristics of the person labeled A. (1 point)
Male have recessive genotypes with the attached earlobe.
b) Describe the genotype of the person labeled B. (1 point)
I
c) Describe the genotype of the person labeled C. (1 point)
d) Could the person labeled D have a recessive allele? Explain. (1 point)