Question

1. why are animal gametes haploid?

gametes have one copy of each chromosome to create a haploid individual.
haploid egg and sperm cells combine to create a diploid individual.
gametes are developing embryos that develop into haploid adults.
gametes have two copies of each chromosome.

Explanation:

• Option 1: Gametes fuse to form a diploid zygote (not to create a haploid individual), so this is incorrect.
• Option 2: Haploid gametes (egg and sperm) fuse during fertilization. The egg (n) and sperm (n) combine to form a diploid (2n) zygote, which develops into a diploid individual. This explains why gametes are haploid.
• Option 3: Gametes are not developing embryos; embryos develop from the fertilized zygote, and most animal adults are diploid, so this is incorrect.
• Option 4: Gametes have one copy of each chromosome (haploid), not two (which would be diploid), so this is incorrect.

Answer:

B. Haploid egg and sperm cells combine to create a diploid individual.