The nucleus of every human cell contains chromosomes—23 pairs, to be exact. These carry our genetic material, known as the genome, and are composed of deoxyribonucleic acid (DNA) and proteins.

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 ...

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 ...

and support the view of sex chromosome evolution as a colorful myriad of situations and trajectories in which many diverse processes are in action. Cell suspensions of two female species [Russell’s ...

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 ...

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

Chromosome abnormality is the condition in a cell or organism where the number of chromosomes or the structure of any chromosome differs from the normal karyotype. When the variant genotype is not ...

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 ...

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 a ...