News tagged with sperm nucleus
Secrets in a seed: Clues into the evolution of the first flowers
Approximately 120-130 million years ago, one of the most significant events in the history of the Earth occurred: the first flowering plants, or angiosperms, arose. In the late 1800s, Darwin referred to their development ...
Sep 14, 2009 |
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The egg makes sure that sperm don't get too old
In contrast to women, men are fertile throughout life, but research at the Sahlgrenska Academy, University of Gothenburg, Sweden, has now shown that a fertilising sperm can get help from the egg to rejuvenate. The result ...
Mar 25, 2009 |
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Search results for sperm nucleus
From embryonic stem cells, a sperm replacement and easier path to genetic modification
Researchers reporting in the April 27 issue of the journal Cell have devised a new and improved method for producing genetically modified animals for use in scientific research. The method relies on haploi ...
Apr 26, 2012 |
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Analyzing life on a molecular level
Three faculty members in USC Dornsife’s Department of Biological Sciences received research grants from the National Institutes of Health (NIH) to develop and apply innovative methods to analyze data ...
Mar 02, 2012 |
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High-energy lifestyles led to evolution of the sexes
Scientists are a step closer to explaining one of the most enduring mysteries of modern biology; why are there males and females?
Dec 19, 2011 |
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Bottom of the swimming league: Naked mole rat sperm
Naked mole rats (Heterocephalus glaber) live in a 'hive' society with one reproducing queen and between one and three reproducing males. The rest of the mole rats in the colony are workers either defending the bu ...
Dec 05, 2011 |
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Pairing up: How chromosomes find each other
After more than a century of study, mysteries still remain about the process of meiosis -- a special type of cell division that helps insure genetic diversity in sexually-reproducing organisms. Now, researchers ...
Nov 01, 2011 |
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Biologists discover how yeast cells reverse aging
Human cells have a finite lifespan: They can only divide a certain number of times before they die. However, that lifespan is reset when reproductive cells are formed, which is why the children of a 20-year-old ...
Jun 24, 2011 |
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Scientists uncover a new understanding of male puberty
Scientists from Monash University have uncovered a new understanding of how male puberty begins.
Medicine & Health / Medical research
Mar 14, 2011 |
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Not all clones the same
Despite their name, not all clones are created equal. This is especially true for the products of somatic cell nuclear transfer (SCNT), which entails the transplantation of the nucleus from a mature somatic ...
Nov 05, 2010 |
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Study finds protein that sets the stage for exchanges of DNA code in eggs and sperm
A team led by a scientist at the University of Pittsburgh School of Medicine has discovered a regulatory protein that influences where genetic material gets swapped between maternal and paternal chromosomes during the process ...
Oct 13, 2010 |
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Stem cells made by reprogramming hold onto their past
Adult cells that have been reprogrammed into induced pluripotent stem cells (iPS cells) do not completely let go of their past, perhaps limiting their ability to function as a less controversial alternative to embryonic stem ...
Jul 19, 2010 |
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List of search results for sperm nucleus
