New mutations occur at increasing rates in the mitochondrial genomes of developing egg cells in aging rhesus monkeys, but the increases appear to plateau at a certain age and are not as large as those seen in non-reproductive ...
Molecular & Computational biology
Apr 4, 2022
0
252
On 22 May 2019, scientists from Queen's University boarded a modified Falcon 20 aircraft at Ottawa airport. Scheduled was a 'vomit comet' flight, where the plane repeatedly climbs to 8km in a steep parabola, alternating with ...
Cell & Microbiology
Nov 29, 2021
0
63
The change of genetic information over time is a key factor for evolutionary adaptations with which living beings can adapt to changes in their environment. On the one hand, genetic variability arises in the course of reproduction, ...
Evolution
Oct 7, 2021
0
48
DNA sequences that can fold into shapes other than the classic double helix tend to have higher mutation rates than other regions in the human genome. New research by a team of Penn State scientists shows that the elevated ...
Molecular & Computational biology
Feb 8, 2021
0
79
Inside every cell lies a genome—a full set of DNA that contains the instructions for building an organism. Across the biological world, genomes show a staggering diversity in size. For example, the genome of the Japanese ...
Evolution
Aug 6, 2020
0
34
Whilst most organisms try to stop their DNA from mutating, scientists from the UK and China have discovered that a common fungus found on bread actively mutates its own DNA as a way of fighting virus-like infections.
Biotechnology
Jun 22, 2020
0
112
Scientists at Uppsala University have proposed an addition to the theory of evolution that can explain how and why genes move on chromosomes. The hypothesis, called the SNAP Hypothesis, is presented in the scientific journal ...
Evolution
Mar 4, 2020
2
177
After exposing more than 70 million grain amaranth seeds to a soil-based herbicide, researchers were not able to find a single herbicide-resistant mutant. Though preliminary, the findings suggest that the mutation rate in ...
Ecology
May 28, 2019
0
245
Mutation rates are proposed to be a pragmatic balance struck between the harmful effects of mutations and the costs of suppressing them; this hypothesis predicts that longer-lived body parts and those that contribute to the ...
Biotechnology
Apr 9, 2019
0
33
Researchers from Aarhus University, Denmark, and Copenhagen Zoo have discovered that the human mutation rate is significantly slower than for our closest primate relatives. This new knowledge may be important for estimates ...
Plants & Animals
Jan 23, 2019
0
352
