How many genes are present in the human genome?

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

How many genes are there in a human sperm cell?

a. 23

b. 46

c. About 21,000

d. about 3 billion