Suppose that Shelly's mother has brown eyes and her father has blue eyes. Shelly has brown eyes. In this example we would ______ Shelly's phenotype for eye color and would _________ Shelly's genotype for eye color.
A) know; not know
B) not know; know
C) know; know
D) not know; not know

Question

Quizplus · Accepted Answer

In genetics, the phenotype refers to those traits that are expressed in the individual. Thus, we know the phenotype: Shelly has brown eyes. The genotype refers to the genetic code of a given individual. Because the gene for brown eyes is dominant, Shelly would have brown eyes whether she inherited a recessive gene from her father and a dominant gene from her mother or whether she inherited dominant genes from both parents. Thus, we cannot determine Shelly's genotype from the information provided.

Suppose That Shelly's Mother Has Brown Eyes and Her Father