Human Y chromosome

The human Y chromosome is one of the two sex chromosomes, which determine biological sex. It is unique to males and carries genes that play a key role in developing male characteristics and reproductive functions. The Y chromosome is smaller than the X chromosome and contains genes related to sperm production and male development. During reproduction, it is passed from father to son, making it useful for tracing paternal ancestry. Although it contains fewer genes than other chromosomes, its unique genetic information is essential for male biological traits and reproductive capability.