Y-chromosome DNA

The Y-chromosome is one of the two sex chromosomes in humans, with males having one X and one Y chromosome. It carries genes that determine male characteristics and is passed from father to son. Y-chromosome DNA testing is commonly used in genealogical studies to trace paternal lineage, as it can reveal paternal ancestry and heritage over generations. Because it does not undergo significant changes through recombination like the X chromosome, it remains relatively stable, making it a useful tool for studying familial relationships and understanding population genetics.