Humans have two types of sex cells, also known as gametes: sperm and eggs. Each male has millions of sperm cells, while females are born with a finite number of egg cells, typically around one to two million at birth. However, this number decreases significantly over time, with approximately 400 to 500 eggs maturing and being released during a woman’s reproductive years.
The sperm and egg cells contain half the number of chromosomes found in other body cells. In humans, this means that sperm and egg cells each have 23 chromosomes. When a sperm cell fertilizes an egg cell, they combine to form a zygote with a full set of 46 chromosomes, restoring the complete DNA necessary for human development.
In summary, humans produce millions of sperm cells in males and have a limited number of egg cells in females, both essential for reproduction and the continuation of the species.