News tagged with positive selection
Evidence of evolutionary selection found in 544 genes
Biology /
Sep 16, 2008 |
4.4 / 5 (46) |
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(PhysOrg.com) -- By comparing the genomes of humans and five other mammals, Cornell researchers have identified 544 genes that have been shaped by positive selection over millions of years of evolution.
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Ecological speciation by sexual selection on good genes: Is speciation adaptive?
Nov 26, 2009 |
5 / 5 (1) |
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Darwin suggested that the action of natural selection can produce new species, but 150 years after the publication of his famous book, 'On the Origin of Species', debate still continues on the mechanisms of speciation. New ...
Selection on genes underlying schizophrenia during human evolution
Sep 05, 2007 |
4.6 / 5 (22) |
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Several genes with strong associations to schizophrenia have evolved rapidly due to selection during human evolution, according to new research in the Proceedings of the Royal Society B.
A nurse makes the decision on who will live
May 23, 2007 |
3.8 / 5 (4) |
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Thymic nurse cells are specialized cells of the thymus capable of taking up as many as 50 developing T cells into their cytoplasm. In the June issue of Experimental Biology and Medicine, Dr. Guyden and hi ...
Will eating certain cereal result in male babies?
Jan 14, 2009 |
4 / 5 (3) |
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Could eating cereal really make it more likely for someone to have a boy baby than a girl baby? Researchers wrote a paper, "Cereal-Induced Gender Selection? Most Likely a Multiple Testing False Positive," that will be published ...
New research shows how gene function drives natural selection in important class of genetic elements
Biology /
Dec 10, 2008 |
4.7 / 5 (15) |
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Transposons are the Clark Kents of a genome. Apparently mild-mannered and inconsequential but with sudden bursts of activity, these free-floating bits of genetic material have for millions of years been sneaking ...
Gene neighbors may have taken turns battling retroviruses
Dec 21, 2007 |
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A cluster of antiviral genes in humans has likely battled retroviral invasions for millions of years. New research by Sara Sawyer, Ph.D., a postdoctoral research fellow in the Basic Sciences Division at Fred Hutchinson Cancer ...
HER2 levels may aid in treatment selection for metastatic breast cancer
Dec 02, 2008 |
3.5 / 5 (2) |
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Findings published in the December 1, 2008, issue of Clinical Cancer Research, a journal of the American Association for Cancer Research, show lapatinib benefits women with HER2-positive breast cancer, while women with H ...
Adaptive functional evolution of leptin in cold-adaptive pika family
Biology /
Jan 23, 2008 |
5 / 5 (1) |
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Researchers at the Northwest Institute of Plateau Biology, Chinese Academy of Sciences have put forward the viewpoint for the first time that adaptive functional evolution may occur in the leptin protein of the pika (Ochotona) ...
Studies suggest males have more personality
Nov 18, 2009 |
3.7 / 5 (9) |
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(PhysOrg.com) -- Males have more pronounced personalities than females across a range of species - from humans to house sparrows - according to new research. Consistent personality traits, such as aggression ...
Scientists identify new regulatory mechanism for critical protein signaling domain
Biology /
Apr 05, 2007 |
5 / 5 (2) |
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In a study with far-reaching implications, scientists at the Scripps Research Institute and other institutions have for the first time identified a new in vivo regulatory mechanism for the PH Domain, a component of many proteins ...
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