Human biological sex is determined by the sex chromosomes X and Y. In most cases, females possess two X chromosomes, while ...

Cutting-edge gene editing technology could eradicate Down syndrome, according to Japanese scientists. Down syndrome, which causes a range of developmental differences and affects 1 in 700 newborns in ...

The Y chromosome can disappear over time in human males, which may introduce a number of health problems. While the exact trigger for such degeneration is unknown, environmental factors can play a ...

Women tend to live longer than men and are often more resilient to cognitive decline as they age. Now researchers might have uncovered a source for this resilience: the second X chromosome in female ...

How does the CRISPR Down Syndrome breakthrough work to remove the extra chromosome 21? We are closer than ever to a world where a genetic condition affecting one in every 700 babies could be addressed ...

When couples have trouble conceiving a baby or lose a pregnancy, they often undergo routine tests, which can turn up a shock: One of the prospective parents may be missing a chromosome. The most ...