In humans, a widow's peak is caused by a dominant allele (w), and a continuous hairline is caused by a recessive allele (w). short fingers are caused by a dominant allele (s), and long fingers are caused by a recessive allele (s). suppose a woman with a continuous hairline and short fingers and a man with a widow's peak and long fingers have three children. one child has a widow's peak and short fingers, one has a widow's peak and long fingers, and one has a continuous hairline and long fingers. what are the genotypes of the parents?