Researchers in Japan have found, for the first time in vertebrates, a genetic switch that determines whether germ cells become sperm or eggs. The gene is named foxl3, and has been identified using a small fish called medaka ...
Plants & Animals
Jun 11, 2015
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In many animal species, the chromosomes differ between the sexes. The male has a Y chromosome. In some animals, however, for example birds, it is the other way round. In birds, the females have their own sex chromosome, the ...
Biotechnology
Jun 4, 2015
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42
A miniscule cluster of estrogen-producing nerve cells in the mouse brain exerts highly specific effects on aggressive behavior in both males and females, according to new research by UC San Francisco scientists.
Cell & Microbiology
Jan 22, 2015
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58
Stem cells have the unique ability to become any type of cell in the body. Given this, the possibility that they can be cultured and engineered in the laboratory makes them an attractive option for regenerative medicine. ...
Cell & Microbiology
Jun 24, 2014
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Before it can fertilize an egg, a sperm has to bind to and bore through an outer egg layer known as the zona pellucida. Despite decades of research, some of the biological mechanisms behind this process remain unclear. A ...
Cell & Microbiology
Jun 16, 2014
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Just a seventh of scientists in Japan are female, government figures show—a record high rate for the country, despite being the lowest rate of any developed nation.
Other
Apr 15, 2014
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1
A new study from the University of Southampton has provided scientists with a better understanding of why chromosome errors are high in women's eggs.
Cell & Microbiology
Mar 18, 2014
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(Phys.org) —In malaria-ridden parts of Africa, mosquito netting protects people from being infected while they sleep; now, a University of Florida entomologist wants to improve the netting by coating it with insecticide ...
Biochemistry
May 24, 2013
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0
Scientists in Mainz and Aachen have discovered a new mechanism that controls egg cell fertility and that might have future therapeutic potential. It was revealed by Professor Dr. Walter Stöcker of the Institute of Zoology ...
Cell & Microbiology
Apr 24, 2013
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Since the first reports of successful cloning of mammals by somatic cell nuclear transfer, concerns have been raised about the efficiency and repeatability of cloning techniques, and the health of cloned offspring. Although ...
Biotechnology
Apr 1, 2013
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