12. Meiosis

Alternate forms of the same gene are called:

A cell that has 2 copies of each chromosome is called a __________ cell:

All human cells, except sex cells, are diploid and have 23 pairs of chromosomes. Human sex cells, such as egg and sperm, are haploid and have _______ chromosomes.

If an intestinal cell in a grasshopper contains 24 chromosomes, then a grasshopper sperm cell contains ___________ chromosomes.

a. 6

b. 12

c. 24

d. 48

Which of the following statements correctly describe the relationship between genes and chromosomes?

a. Genes are chromosomes.

b. Chromosomes contain many genes.

c. Genes are made up of hundreds or thousands of chromosomes.

d. Genes are assorted independently during meiosis, but chromosomes are not.

e. More than one of the above is correct.

An allele is a ________.

a. Version of a gene

b. Dysfunctional gene

c. Protein

d. Spare copy of a gene

e. Phenotype

How many genes are there in a human sperm cell?

a. 23

b. 46

c. About 21,000

d. about 3 billion