Human biological sex is determined by the sex chromosomes X and Y. In most cases, females possess two X chromosomes, while males have one X and one Y. However, there is some evidence that the Y ...

The human Y chromosome, responsible for determining male sex, has been gradually shrinking over millions of years. This ...

Females have one active X chromosome and one dormant X chromosome in each cell. But a study suggests that genes on the ...

The human Y chromosome, which plays an important role in determining male sex, is undergoing a dramatic change - it’s ...

Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair.

Researchers have shed new light on how a type of heart valve disease—aortic valve stenosis—progresses differently in males and females. The research paves the way for treatments that can be tailored ...

It’s not clear why these backups have evolved. The new Y chromosome sequences could spell change for metagenomics research, which involves sequencing microbial genomes. Human DNA contaminants often ...

The Y-STR technique works by zeroing in on the characteristics of the Y-chromosome which is only present in the DNA of human ...

The disappearance of the Y chromosome could result in the evolution of a new sex-determining gene or other reproductive mechanisms, with significant implications for human reproduction.

Human biology is not black and white. Although newborns are typically categorized as male or female at birth based on visible ...