Cells in the body proliferate at different rates. Some divide constantly and throughout life, like the ones that line the gut. Others divide only rarely, sometimes resting for several years in a non-dividing state. Now, a ...
Cell & Microbiology
Aug 22, 2019
0
67
For the past 20 years, researchers have been trying to perfect the construction of human artificial chromosomes, or HACs for short. In a paper published today in Cell, Penn researchers describe a new way to form an essential ...
Molecular & Computational biology
Jul 25, 2019
0
52
Geneticists exploring the dark heart of the human genome have discovered big chunks of Neanderthal and other ancient DNA. The results open new ways to study both how chromosomes behave during cell division and how they have ...
Evolution
Jun 18, 2019
0
938
Our genetic code is stored in chromosomes that are composed of DNA (deoxyribonucleic acid). To make sure the genetic code is maintained accurately in all the cells, our cells must replicate precisely and distribute its chromosomes ...
Cell & Microbiology
May 22, 2019
0
107
Although the genomes of thousands of plant and animal species have been sequenced, for most of these genomes a significant portion is missing—the highly repetitive DNA. In the midst of these mysterious genome compartments ...
Molecular & Computational biology
May 14, 2019
0
154
Although much of the human genome has been sequenced and assembled, scientists have hit roadblocks trying to map unassembled regions of DNA that consist mostly of repetitive sequences, including the centromere.
Molecular & Computational biology
May 14, 2019
1
73
When a cell divides—a process known as mitosis—its chromosomes need to be separated and evenly distributed into the newly created daughter cells. Although this is known to be extremely complicated and to feature a range ...
Cell & Microbiology
Nov 13, 2018
0
25
ETH researchers studying yeast cells have discovered a new mechanism for detecting foreign genetic material from pathogens or environmental contamination, and rendering it harmless.
Cell & Microbiology
Oct 11, 2018
0
13
It's been nearly two decades since a UC Santa Cruz research team announced that they had assembled and posted the first human genome sequence on the internet. Despite the passage of time, enormous gaps remain in our genomic ...
Biotechnology
Mar 19, 2018
0
40
As cells divide, some of their DNA is rearranged, spurring the emergence of new traits that can dictate whether a species survives or flounders. But some stretches of DNA appear to be so crucial to the basic functioning of ...
Biotechnology
Apr 11, 2017
0
12
