A University of Michigan-led study based on a review of genetic and health information from more than 276,000 people finds strong support for a decades-old evolutionary theory that sought to explain aging and senescence.
Evolution
Dec 8, 2023
0
260
(Phys.org)—Although humans are a single species, not all genetic variation is shared between populations – and the ability to sequence our entire genome has allowed scientists to catalogue mutations that occur in one ...
Penguins that died 44,000 years ago in Antarctica have provided extraordinary frozen DNA samples that challenge the accuracy of traditional genetic aging measurements, and suggest those approaches have been routinely underestimating ...
Evolution
Nov 10, 2009
16
0
Before there were animals, bacteria or even DNA on Earth, self-replicating molecules were slowly evolving their way from simple matter to life beneath a constant shower of energetic particles from space.
General Physics
May 20, 2020
11
1188
Any multicellular animal, from a blue whale to a human being, poses a special difficulty for the theory of evolution. Most of the cells in its body will die without reproducing, and only a privileged few will pass their genes ...
Cell & Microbiology
Dec 15, 2011
7
0
(Phys.org) —A study on human mitochondrial DNA has led to a new estimate of the time at which humans first began to migrate out of Africa, which was much later than previously thought.
Research published in April provided "slam dunk" evidence of two prehistoric supernovae exploding about 300 light years from Earth. Now, a follow-up investigation based on computer modeling shows those supernovae likely exposed ...
Astronomy
Jul 11, 2016
10
305
Nucleic acid sequencing methods, which determine the order of nucleotides in DNA fragments, are rapidly progressing. These processes yield large quantities of sequence data—some of which is dynamic—that helps researchers ...
Mathematics
Dec 28, 2017
0
345
A team of researchers affiliated with multiple institutions in Japan, working with colleagues from Vietnam, Cambodia, Singapore, Taiwan, Indonesia and Ghana, has found evidence of mosquitoes that are highly resistant to common ...
New research led by the University of Nebraska-Lincoln and the University of New Mexico has pinpointed changes in a single, mutation-prone gene site that ultimately allow wrens to breathe easy in the rarefied air of the Andes.
Evolution
Oct 14, 2015
20
34
