Question

Why is meiosis important for sexual reproduction?

A. It allows the zygote formed from fertilization to have triple the chromosome number of the organism.
B. It allows gametes to have twice the original number of chromosomes of the organism.
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c. It allows gametes to have half the original number of chromosomes of the organism.
D. It allows the zygote formed from fertilization to have half the original number of chromosomes of the organism.

Answer 1

Gametes are mature haploid cells, or sex cells. When gametes unite with others from the opposite sex in the form of fertilization they create a zygote which then forms an embryo etc. At the end of meiosis the gametes only have half the chromosomes of the organism (only one copy of DNA)

Answer: C. It allows gametes to have half the original number of chromosomes of the organism.