6. In class we discussed autosomal polymorphisms such as widow’speak and detached
ear lobes, both of which are dominant traits. Suppose that a manwith a widow’s peak and
attached ear lobes (whose father had detached ear lobes) marriesa woman without a widow’s
peak and detached ear lobes (whose father had attached earlobes). What is the probability
that their first child will:
a.not have a widow’s peak or attached ear lobes?
b.have both a widow’s peak and detached ear lobes?
c.have a widow’s peak and attached ear lobes?
