In humans, polydactylism (having an extra finger on each hand) is dominant to the typical 5-finger arrangement. Tongue rolling is dominant to not being able to roll one’s tongue. A man who is homozygous for 5-fingers and who cannot roll their tongue has children with a woman who is heterozygous for polydactylism and tongue rolling.
a) Write the cross.
b) Write the gametes for each parent.
c) Describe how you would determine the phenotypic ratio from this cross.
a) Write the cross.
b) Write the gametes for each parent.
c) Describe how you would determine the phenotypic ratio from this cross.