Although scientists have known since the middle of the 19th century that the tropics are teeming with species while the poles harbor relatively few, the origin of the most dramatic and pervasive biodiversity on Earth has ...
Earth Sciences
Jun 10, 2013
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Inbreeding is generally deleterious, even in flowering plants. Since inbreeding raises the risk that bad copies of a gene will be expressed, inbred progeny suffer from reduced viability.
Evolution
Jun 10, 2013
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According to researchers at Boston Children's Hospital, stem cells that strongly express a gene called WNT3 are biased to develop into cells and tissues including pancreas, liver and bladder. This discovery suggests that ...
Cell & Microbiology
Jun 4, 2013
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Ancient DNA recovered from a series of skeletons in central Germany up to 7500 years old has been used to reconstruct the first detailed genetic history of modern Europe.
Biotechnology
Apr 23, 2013
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The extraordinary level of conservation of the tulip tree (Liriodendron tulipifera) mitochondrial genome has redefined our interpretation of evolution of the angiosperms (flowering plants), finds research in biomed Central's ...
Biotechnology
Apr 14, 2013
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In mammals, an individual's sex is determined by the chromosomes it inherits from its parents. Two X chromosomes lead to a female, whereas one X and one Y lead to a male. Y chromosomes are only passed from fathers to sons, ...
Plants & Animals
Apr 4, 2013
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Scientists have decoded the genome of the western painted turtle (Chrysemys picta bellii) , one of the most abundant turtles on Earth, finding clues to their longevity and ability to survive without oxygen during long winters ...
Biotechnology
Mar 27, 2013
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(Phys.org) —A protein-folding simulation shows that the debated theory of long-term evolution is not only possible, but that the outcomes are predictable. The Stanford experiment provides a framework for testing evolutionary ...
Evolution
Mar 18, 2013
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Alex Pyron's expertise is in family trees. Who is related to whom, who begat whom, how did they get where they are now. But not for humans: reptiles.
Plants & Animals
Mar 12, 2013
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In collaboration with the Royal Botanic Gardens of Madrid and the Slovenian Forestry Institute, researchers in the Basque Country have documented two new species of Hydnum, commonly known as ox tongue mushrooms, as part of ...
Plants & Animals
Feb 26, 2013
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