A human cell containing 22 autosomes and a Y chromosome isa. a sperm.b. an egg.c. a zygote.d. a somatic cell of a male.

The human karyotype shown below:

a) Is of a haploid cell.

b) Is from a gamete.

c) Shows 23 chromosomes.

d) All of the above.

How might the two members of a pair of homologous chromosomes differ from each other?

a) In the sequence of the DNA making up each of the chromosomes.

b) In the relative position of the genes present on each of the chromosomes.

c) They cannot differ if they are homologous.

d) In the kinds of genes present on each of the chromosomes.