Why do the cells used for reproduction only have half (½) of the DNA that other cells have?

Because each chromosome has a pair, these cells are called "diploid" cells. On the other hand, human sperm and egg cells have only 23 chromosomes, or half the chromosomes of a diploid cell.

Explanation:

c

explanation:

desert perennials often survive by remaining dormant during dry periods of the year, then springing to life when water becomes available. most annual desert plants germinate only after heavy seasonal rain, then complete their reproductive cycle very quickly.