A test cross was done to determine the genotype of a parent with a dominant phenotype, The outcome resulted in half dominant and half recessive offspring. What can you conclude about the results?
a. The unknown genotype of the dominant parent was Aa.
b. The offspring that shows a recessive trait is homozygous recessive.
c. One parent the the test cross was aa.
d. All of these are correct conclusions about the results of the test cross.
e. The offspring that show a dominant trait are heterozygotes.