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 ...

Cephalopods may have the oldest sex chromosomes of any animal, according to a new discovery in the octopus genome. That's a big deal given that scientists didn't know until now if these oddball ...

Researchers from the University of California, San Francisco (UCSF) say they have now found that when the brain cells of female mice express only a maternal X chromosome, the animals’ memory and ...

It took more than 50 years for Marthe Gautier to set the record straight about her discovery of the genetic cause of Down ...

The mosaic category contained those polyploid cases that had multiple cell lines, including some with aneuploidy. A listing of these cases is found in Appendix A. All chromosomes were represented ...

Mysterious Blobs Found inside Cells Are Rewriting the Story of How Life Works Tiny specks called biomolecular condensates are ...

Women are born with two X chromosomes and inherit one from each parent. But in every cell of their body, just one X chromosome is needed—so the other is randomly inactivated. Some cells use only ...

University of Oregon researchers discovered a 480-million-year-old sex chromosome in the California two-spot octopus, making it one of the oldest known animal sex chromosomes. This finding confirms ...

Our gender is identical to our sex, written in our genes, can be clearly assigned and does not change over our lifetime. That's what many people say. The woman on one side, the man on the other ― ...

Overall, our study underscores the dynamic and cyclical nature of chromosome stiffness, modulated by both the cell cycle and age-related factors. Chromosome compaction is not a random process, but a ...

Typically, females carry two X chromosomes in each cell — one from their mom and one from their dad. But a cell needs only one X to be active, so the other is "silenced." This results in females ...