Question

Which is greater: (a) the classes of gametes produced by a homozygous individual, or (b) the classes of gametes produced by a heterozygote?

Answer 1

1. The classes of gametes produced by a heterozygote is greater.
2. A heterozygote for a particular gene has two allele types and forms two different gametes (Aa forms A and a).
3. A homozygote for a particular gene has only one form of the allele and makes only one kind of gamete (e.g. AA forms A and aa forms a).