Human cells contain 23 pairs of chromosomes that form a loosely organized cluster in the cell nucleus. When cells divide, they must first condense these chromosomes—each of which when fully extended is a thousand times ...
Cell & Microbiology
Jun 13, 2016
0
26
Although it's widely known that modern humans carry traces of Neanderthal DNA, a new international study led by researchers at the Stanford University School of Medicine suggests that Neanderthal Y-chromosome genes disappeared ...
Archaeology
Apr 7, 2016
22
1862
UT Southwestern Medical Center researchers have determined the atomic structure of an enzyme that plays an essential role in cell division, the fundamental process that occurs countless times daily in many life forms on Earth.
Cell & Microbiology
Mar 30, 2016
0
23
Each baby girl starts out with two X chromosomes, but to be healthy she only needs the genes from one. The extra X chromosome gets trussed up and shut down in the earliest stages of development.
Cell & Microbiology
May 13, 2015
0
75
Human chromosomes are much bigger and more complex than proteins, but like proteins, they appear to fold and unfold in an orderly process as they carry out their functions in cells.
Cell & Microbiology
Apr 28, 2015
2
66
(Phys.org)—Is there a way to peer inside the nucleus of a living cell and see how the genes interact? After the completion of the Human Genome Project in 2001, researchers have focused on epigenetic factors, spatial orientation, ...
The Y chromosome, that little chain of genes that determines the sex of humans, is not as tough as you might think. In fact, if we look at the Y chromosome over the course of our evolution we've seen it shrink at an alarming ...
Biotechnology
Nov 14, 2014
3
3
With the completion of the sequencing and analysis of the gibbon genome, scientists now know more about why this small ape has a rapid rate of chromosomal rearrangements, providing information that broadens understanding ...
Biotechnology
Sep 10, 2014
24
0
Life can be so intricate and novel that even a single cell can pack a few surprises, according to a study led by Princeton University researchers.
Cell & Microbiology
Sep 8, 2014
6
0
In many species, the possession of X and Y chromosomes determines whether an individual develops into a male or female. In humans, for example, individuals who inherit their father's Y chromosome become male (XY), and individuals ...
Evolution
May 13, 2014
2
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