You are trying to breed short eared rabbits, but you don't know the heritability of ear length. You measure the ears of 100 rabbits, and mean ear length is 7.7 cm. You pick 20 rabbits with the shortest ears to breed. Their mean ear length is 7.2 cm. The offspring of these rabbits have ears that are 7.5 centimeters on average. What is heritability of ear length in rabbits? If you bred rabbits with ears that were 8 cm, what would you predict would be the mean ear length of their offspring? Show your work.