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.

• 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.

Answer: (A)