Cells will ramp up gene expression in response to physical forces alone, a new study finds. Gene activation, the first step of protein production, starts less than one millisecond after a cell is stretched—hundreds of times ...
Molecular & Computational biology
Apr 1, 2020
0
1462
(PhysOrg.com) -- Studying chemical modifications in the chromosomes of cells is akin to searching for changes in coiled spaghetti. Scientists at Cornell have figured out how to stretch out tangled strands of DNA from chromosomes, ...
Analytical Chemistry
Oct 31, 2011
0
0
The field of evolutionary biology has seen its share of spirited debates. But if there's one principle that virtually every expert in the field agrees on, it's that natural selection occurs at the level of the genome.
Evolution
Jan 16, 2020
9
1870
Humans have a "natural" lifespan of around 38 years, according to a new method we have developed for estimating the lifespans of different species by analyzing their DNA.
Plants & Animals
Dec 13, 2019
15
913
It has long been understood that a parent's DNA is the principal determinant of health and disease in offspring. Yet inheritance via DNA is only part of the story; a father's lifestyle such as diet, being overweight and stress ...
Molecular & Computational biology
Mar 16, 2021
9
2811
Scientists at the University of Cambridge working with the Weizmann Institute have created primordial germ cells - cells that will go on to become egg and sperm - using human embryonic stem cells. Although this had already ...
Cell & Microbiology
Dec 24, 2014
1
0
For decades, a small group of cutting-edge medical researchers have been studying a biochemical, DNA tagging system, which switches genes on or off. Many have studied it in bacteria and now some have seen signs of it in, ...
Molecular & Computational biology
Feb 3, 2022
0
159
UNSW Sydney researchers, for the first time, have completely defined the essential cellular process known as methylation. In a paper published in the Proceedings of the National Academy of Sciences, the landmark study emphasizes ...
Cell & Microbiology
Jun 1, 2023
1
2448
Carbon dioxide (CO2) is the most abundant greenhouse gas causing climate change but has existed on Earth long before humans started releasing it into the atmosphere at unprecedented levels. As such, some of the planet's earliest ...
Analytical Chemistry
Aug 18, 2023
2
168
For the first time, astronomers have detected the presence of complex organic molecules, the building blocks of life, in a protoplanetary disk surrounding a young star, suggesting once again that the conditions that spawned ...
Astronomy
Apr 8, 2015
78
6182
