Gametes (from the Greek "gamete", meaning "wife") are reproductive cells that participate in the process of sexual reproduction. Gametes vary in form and function depending on the sex of the organism that produces them. In females the gametes are eggs, and in males they are sperm.
Eggs, or oocytes, are the largest cells in the animal body. They are produced in a woman's ovaries and can remain dormant until a certain point when they begin to develop and prepare for fertilization. The eggs contain the sex DNA needed to create a new organism. They also contain nutrients that allow the embryo to develop during the first few days of life.
Spermatozoa, or spermatozoa, are produced in a man's testicles and are small, motile cells. They contain only sex DNA and are necessary for fertilization of the egg. Sperm move towards the egg thanks to their motor apparatus, which helps them overcome obstacles on the way to fertilization.
During sexual intercourse, sperm leave the male genital organs and enter the female reproductive system, where they travel to the egg. When the sperm reaches the egg, it penetrates it and unites with its nucleus, forming a zygote. The zygote contains sexual DNA from both parents and begins to divide to form a new organism.
Thus, gametes play an important role in the process of sexual reproduction. They contain the necessary information to create new organisms and allow them to inherit genes from both parents. Without gametes, the process of sexual reproduction would be impossible, and life on the planet would not be able to continue.