Human gametes are haploid cells and include two types: , which are lightweight and can swim; and , which are large and packed with organelles.

In human biology, gametes are the reproductive cells that are haploid, meaning they contain a single set of chromosomes. There are two types of gametes:

1. Sperm Cells: These are the male gametes. They are relatively lightweight as they are designed to swim through the female reproductive tract to reach the egg. Sperm cells have a streamlined shape and are equipped with a flagellum (tail) that allows them to propel themselves.

2. Egg Cells (Ova): These are the female gametes. Contrary to sperm, egg cells are much larger in size and are packed with organelles and nutrients. These characteristics make them essential for the early development of the embryo after fertilization. Egg cells provide the necessary cellular machinery for the initial stages of embryogenesis.

Together, these gametes play a crucial role in sexual reproduction, with sperm fertilizing the egg to form a zygote, which eventually develops into a new individual.