(Phys.org)—A University of Michigan biophysical chemist and his colleagues have discovered the smallest and fastest-known molecular switches made of RNA, the chemical cousin of DNA. The researchers say these rare, fleeting ...
Cell & Microbiology
Oct 7, 2012
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Genetic instructions for developing limbs and digits were present in primitive fish millions of years before their descendants first crawled on to land, researchers have discovered.
Biotechnology
Jul 11, 2011
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Bacteria of the genus Shigella, closely related to the well-known Escherichia coli, are the second most common cause of fatal bacterial diarrheal diseases, with over 200,000 victims worldwide every year. There are repeated ...
Cell & Microbiology
Jan 19, 2024
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1
In humans and other animals, sex is usually determined by a single gene. However, there are claims that in some species, such as platyfish, it takes a whole "parliament" of genes acting together to determine whether offspring ...
Plants & Animals
Apr 21, 2023
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54
New findings from the Stowers Institute for Medical Research uncover critical insights about how a dangerous selfish gene—considered to be a parasitic portion of DNA—functions and survives. Understanding this dynamic ...
Cell & Microbiology
Dec 8, 2022
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127
A team of Duke researchers has identified a group of human DNA sequences driving changes in brain development, digestion and immunity that seem to have evolved rapidly after our family line split from that of the chimpanzees, ...
Evolution
Nov 23, 2022
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245
At the moment of fertilization, the genes in the fertilizing sperm and egg are switched off. For a new embryo to develop, they must be switched on—but how?
Cell & Microbiology
Oct 3, 2022
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21
It's sunburn season. Many of us have experienced the pain and peeling that comes from unprotected time in the sun, but we may not focus on a remarkable and vital part of the process: the regeneration of skin as the damaged ...
Cell & Microbiology
Aug 3, 2022
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171
When heat waves hit, they don't just take a toll on people—the plants we depend on for food suffer too. That's because when temperatures get too high, certain plant defenses don't work as well, leaving them more susceptible ...
Ecology
Jun 29, 2022
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Zebrafish and humans look very different on the outside. Yet about 70 percent of their genes are similar to human genes—including many that can trigger diseases. That makes the animal a popular model organism. Many observations ...
Plants & Animals
Feb 24, 2022
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