While some of our body's cells divide in a matter of hours, the process of making sperm, meiosis, alone takes about 14 days from start to finish. And fully six of those days are spent in the stage known as the pachytene, ...
Molecular & Computational biology
Mar 25, 2020
1
230
A new study on how and when the precursors to eggs and sperm are formed during development could help pave the way for generating egg and sperm cells in the lab to treat infertility.
Cell & Microbiology
Feb 6, 2020
1
251
Maturing sperm cells turn on most of their genes, not to follow their genetic instructions like normal, but instead to repair DNA before passing it to the next generation, a new study finds.
Cell & Microbiology
Jan 23, 2020
0
454
How do female insects manage to keep sperm fresh for months after mating? This has been a central question for the sperm biologists of the Chair of Applied Zoology headed by Prof. Dr. Klaus Reinhardt. Now the scientists have ...
Cell & Microbiology
Jan 15, 2020
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16
Every tenth couple worldwide is affected by infertility. The reasons for this are manifold, but mostly well researched. Nevertheless, about fifteen percent of cases remain unexplained. A team of biologists at TU Dresden has ...
Cell & Microbiology
Nov 29, 2019
0
13
Nature's most common swimmers are single-celled organisms such as microalgae that swim toward light sources, and sperm cells that swim toward an ovum. For a physicist, cells are simply biochemical machines, which must obey ...
General Physics
Oct 29, 2019
0
32
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
28
135
Why does it take 200 million sperm to fertilize a single egg?
Cell & Microbiology
Jul 18, 2019
0
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
0
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