12. Meiosis

A human cell containing 22 autosomes and a Y chromosome is

a. A sperm

b. An egg

c. A zygote

d. A somatic cell of a male

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

Homologous pairs of chromosomes ________.

a. Are two different chromosomes attached to each other.

b. Are exact copies of one chromosome that are attached to each other.

c. Are separated from each other during meiosis I.

d. Are separated from each other during interphase.

e. Are chromosomes that carry different genes.