Here's why:
* Gametes are sex cells, specifically sperm in males and egg cells in females.
* They contain half the number of chromosomes (haploid) compared to other cells in the body (diploid).
* When a sperm fertilizes an egg, their chromosomes combine, forming a new diploid cell (zygote) that develops into a new individual.
So, the genetic information carried by the gametes is what gets passed on to the offspring.