In cattle, the hornless condition (H) is dominant and the horned condition (h) is recessive. A bull
without horns is crossed with a cow with horns. Of the four offspring, one (1) is horned and three (3) are
hornless. Determine the genotype of the bull and the cow.
Hh (bull) x hh (cow) = some offspring will be Hornless & horned. The number of offspring is
insignificant.
2. In humans, widow's peak (W) is dominant over a continuous hairline (w), and short fingers (F) are
dominant over long fingers (f). Two individuals with widow's peak and short fingers have a child with
continuous hairline and long fingers. Determine the genotype of the parents.
WwFf x WwFf
3. In humans, free ear lobes (E) is dominant over attached ear lobes (e), and brown eyes (B) is dominant
over blue eyes (b). A man with free ear lobes and brown eyes marries a woman with attached ear lobes and
brown eyes. Of four children, one has free ear lobes and brown eyes, one has free ear lobes and blue eyes,
one has attached ear lobes and brown eyes, and one has attached ear lobes and blue eyes. Determine the
genotypes of the parents.