The molecular function of genes in mice has a major influence on the sex of their offspring, according to a new discovery that reveals more about the impact of genes on animal fertility.
Evolution
Oct 21, 2019
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3
In the battle of the sexes, males appear to have the innovative edge—from a genetic standpoint, at least. Scientists are finding that the testes are more than mere factories for sperm; these organs also serve as hotspots ...
Evolution
Aug 16, 2019
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135
Why does it take 200 million sperm to fertilize a single egg?
Cell & Microbiology
Jul 18, 2019
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17
Scientists from the University of Bath are challenging the claims of two high profile papers from 2018 which reported that in the mouse, RNA has to be added to sperm for them to be fully fertile. The Bath findings undermine ...
Cell & Microbiology
Jul 2, 2019
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0
Princeton University researchers have discovered that learned behaviors can be inherited for multiple generations in C. elegans, transmitted from parent to progeny via eggs and sperm cells. The paper detailing this finding, ...
Cell & Microbiology
Jun 6, 2019
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518
Female fruit flies can feel when a sexual partner is a good fit. Scientists have long known that proteins in a male fly's ejaculate make female flies temporarily lose interest in other partners. It's a trick male flies use ...
Plants & Animals
May 6, 2019
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114
A study by Ph.D. student Hanna Nyborg Støstad has investigated the peculiar spiral shape of songbird sperm. Støstad compared sperm cells of 36 bird species including house sparrows and tree swallows, and found that species ...
Plants & Animals
Apr 5, 2019
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197
Pathological infertility is a condition affecting roughly 7 percent of human males, and among those afflicted, 10 to 15 percent are thought to have a genetic cause. However, pinpointing the precise genes responsible for the ...
Cell & Microbiology
Mar 26, 2019
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23
As an organism grows and responds to its environment, genes in its cells are constantly turning on and off, with different patterns of gene expression in different cells. But can changes in gene expression be passed on from ...
Biotechnology
Mar 20, 2019
1
61
When potential DNA evidence—say, from a sexual assault case—is submitted to a forensic lab for analysis, the scientists are often faced with the time-consuming challenge of sorting out which DNA profile came from the ...
Analytical Chemistry
Feb 6, 2019
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125
