The male and female gametes each contribute DNA material during fertilization. This is the process where the sperm (male gamete) fuses with the egg (female gamete).

Here's a breakdown:

* Sperm: Carries half of the father's genetic material (23 chromosomes) in its nucleus.

* Egg: Carries half of the mother's genetic material (23 chromosomes) in its nucleus.

* Fertilization: When the sperm penetrates the egg, their nuclei fuse, combining the 23 chromosomes from the sperm and the 23 chromosomes from the egg to create a complete set of 46 chromosomes in the zygote (the first cell of the developing organism).

This fusion of genetic material from both parents creates a unique combination of DNA, leading to the genetic diversity of offspring.