The improper segregation of chromosomes during cell division leads to abnormalities that disrupt the proper functioning of ...

"You either have XX or XY chromosomes," Rep. Nancy Mace, R-S.C., wrote Feb. 20 on X. "Those are the options." Most commonly, a person is born with two X chromosomes (female) or an X and a Y (male).

“In typical aging, women have a brain that looks younger, with fewer cognitive deficits compared to men,” said Dr. Dena Dubal ...

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 ...

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. They determine the ...

The answer could lie in exceptional DNA. Scientists at UC San Francisco have found that parts of our chromosomes have evolved at breakneck speeds to give us an edge in brain development compared ...

Why are the human sex chromosomes called “X” and “Y,” while the other 22 chromosomes are identified only by numbers? The answer begins in the late 1800s, when insect gonad cells, whose large ...

DNA segments that can move from one part of the genome to another -- are key to bacterial evolution and the development of antibiotic resistance. Researchers have discovered a new mechanism these ...

Furthermore, the constructs often attached to natural chromosomes, potentially disrupting the host cell’s genome. In the new study, researchers at the University of Pennsylvania circumvented this ...

How did humans evolve brains capable of complex language, civilization, and more? Scientists at UC San Francisco recently ...