Answer
a. Two different types of gametes
b. One type of gamete
c. Two types of gametes
Work Step by Step
a. 1. A male has one X and one Y chromosome.
2. X-linked alleles are found on the X chromosome.
3. Due to the presence of X and Y chromosomes, a male can produce two types of gametes.
4. These gametes carry either the X chromosome or the Y chromosome.
5. This results in two distinct types of gametes: one with X-linked alleles and another with Y-linked alleles.
b. 1. Homozygous means having identical alleles for a particular gene.
2. If a female is homozygous for an X-linked allele, both her X chromosomes carry the same allele.
3. As a result, she can only produce one type of gamete with respect to that allele.
4. This gamete carries the specific allele, as both X chromosomes are identical in terms of alleles.
c. 1. Heterozygous means having different alleles for a particular gene.
2. When a female is heterozygous for an X-linked allele, her two X chromosomes carry different alleles.
3. This allows her to produce two distinct types of gametes with respect to that allele.
4. One gamete will carry the allele from one X chromosome, while the other gamete will carry the allele from the second X chromosome.
5. The diversity in gametes arises from the presence of two different alleles on her two X chromosomes.
