The inactivation of one copy of the X chromosome in female mammals may start to fail as they get older, which may be why ...

Hormonal classes could divide athletes according to the sex biology that matters — increasing fairness while avoiding ...

In humans and many other animals, specific chromosomes determine sex. But how did researchers discover these so-called sex chromosomes? Throughout the many observations that led to this conclusion ...

Scientists of the Biology Centre, Czech Academy of Sciences, in collaboration with University of Liverpool have found the ...

Most human cells contain 23 pairs of chromosomes, with one half of each pair coming from one parent, and the other half coming from the other. The 23rd pair are the X and Y chromosomes – aka the “sex ...

In a milestone achievement, a whole chromosome has been created from scratch by scientists for the first time ever. The tRNA ...

In humans and many other animal species, sex is determined by specific chromosomes. How did researchers discover these so-called sex chromosomes? The path from the initial discovery of sex ...

Working with human breast and lung cells, Johns Hopkins Medicine scientists say they have charted a molecular pathway that ...

The beginning of life is shrouded in mystery. While the intricate dynamics of mitosis are well-studied in the so-called ...

Trisomy, a condition in which one of the chromosomes occurs in triplicate instead of the normal duplicate, involves the twenty-first pair in mongolism. Two other trisomy syndromes, each associated ...

Long stretches of DNA are packed with other materials, like proteins, to make 46 chromosomes. Genes contain the information, ...

Gender is a personal identity that exists on a spectrum, can change over a person's lifetime, and is something that a person ...