Polydactylism is a dominant trait that results in extra fing…
Polydactylism is a dominant trait that results in extra fingers and toes in humans. A normal number of digits (10 per hand and foot) is a recessive trait. A polydactyl man marries a woman with 10 fingers and toes. They have a child that has a normal number of digits. What are the genotypes of the married couple?