Use the Punnett squares you completed in Exercise 1 on p.69 of your lab manual to answer Parts a and b.Part a.

 Timmy was homozygous dominant for the freckles trait. Looking at the Punnett square for his parents' mating, what was the probability of Timmy having a different genotype? What was the probability of Timmy having a different phenotype?

a.different genotype: 0%, different phenotype: 0%

b.different genotype: 25%, different phenotype: 75%

c.different genotype: 75%, different phenotype: 25%

d.different genotype: 50%, different phenotype: 50%