Beneficial mutations within a bacterial population accumulate during evolution, but performance tends to reach a plateau. Consequently, theoretical evolutionary models need to take into account a "braking effect" in expected ...
Evolution
Jun 8, 2011
7
0
Vaquita porpoises are on the edge of extinction, with just 10 left in their sole habitat within Mexico's Gulf of California.
Plants & Animals
May 8, 2022
0
70
(Phys.org)—Using an innovative approach, scientists at The Scripps Research Institute (TSRI) have determined the structure of Ltn1, a recently discovered "quality-control" protein that is found in the cells of all plants, ...
Biochemistry
Jan 14, 2013
0
0
In the 1950s, the geneticist J.B.S. Haldane attributed the maintenance or persistence of the mutation responsible for anomalies in red blood cells commonly observed in Africa to the protection these anomalies provided against ...
Evolution
Jan 13, 2023
0
102
Researchers at Mount Sinai, in collaboration with researchers at New York University, have published a study in Cell Host & Microbe that sheds light on the mechanisms behind the severity, or virulence, of methicillin-resistant ...
Cell & Microbiology
Jan 20, 2023
0
68
Genghis Khan's conquering armies fed on dried curd as they crossed the vast steppes of Eurasia, ancient Romans imported pungent cheeses from France, and Bedouin tribes crossing the Arabian Desert have for centuries survived ...
Archaeology
Jan 21, 2020
0
330
Researchers from the group of Hans Clevers (Hubrecht Institute) corrected mutations that cause cystic fibrosis in cultured human stem cells. In collaboration with the UMC Utrecht and Oncode Institute, they used a technique ...
Cell & Microbiology
Aug 9, 2021
0
998
An international team of marine scientists, led by the University of Groningen in the Netherlands and the Center for Coastal Studies in the U.S., has studied the DNA of family groups from four different whale species to estimate ...
Evolution
Aug 31, 2023
0
115
The microbes living in your food can affect your risk of cancer. While some help your body fight cancer, others help tumors evolve and grow.
Evolution
Jan 31, 2023
0
8
Progressive retinal atrophy (PRA) is a group of inherited diseases that causes progressive degeneration of the light sensitive cells at the back of the eye. Dogs with PRA have normal sight at birth, but by the age of four ...
Molecular & Computational biology
Jul 21, 2024
0
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