STUDIES of human chromosomes have been greatly facilitated by the development of newer technics, particularly peripheral blood leukocyte culture. 1–3 Many abnormalities have been described, most of ...

Cell division is an essential process in humans, animals and plants as dying or injured cells are replenished throughout life. Cells divide at least a billion times in the average person, usually ...

As men get older, something surprising can happen inside their bodies at the microscopic level. Some of their cells begin to ...

Human cells have two copies of each chromosome, and this balance is essential for genes to be expressed in the appropriate ...

Researchers report surprising results of experiments intended to explore the consequences of having too many or too few chromosomes, a phenomenon that biologists call aneuploidy. They were surprised ...

Mendez and colleagues reported the identification of a Y chromosome haplotype (the A00 lineage) that lies at the basal position of the Y chromosome phylogenetic tree. Incorporating this haplotype, the ...

This is a preview. Log in through your library . Abstract Evolution of chromosome complements can be resolved by genome sequencing, comparative genetic mapping, and comparative chromosome painting.

Researchers have discovered an important part of the mechanism involved in how chromosomes are pulled apart during cell division, so that one complete set goes into each of the new cells. Cell ...