If humans have 23 pairs of chromosomes, each carrying hundreds to thousands of genes, roughly how many genes are there in the human genome?a. 23;b. 46;c. 1000;d. 20,000;e. 200,000

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.