Suppose that two people having free earlobes start a family. The first child has free earlobes and their second has attached ear
lobes. a. What are the genotypes of the parents? ______________.
b. What is the genotype of their first child? ________.
c. What is the genotype of their second child? _______.
Parents and first child have free earlobes so it must be dominant trait while attached is recessive. In order to have a recessive trait as seen in the second child, the parents must have a recessive allele.
