Scientists historically have argued that evolution proceeds through gradual development of traits. But how can incremental changes apply to the binary switch between two sexes, male or female? Researchers at Case Western ...
Evolution
Jul 29, 2013
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Two teams of investigators led by Professor Gregory Hannon of Cold Spring Harbor Laboratory (CSHL) today publish studies revealing many previously unknown components of an innate system that defends sex cells – the carriers ...
Cell & Microbiology
May 9, 2013
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(Phys.org) —North Carolina State University researchers studying aquatic organisms called Daphnia have found that exposure to a chemical pesticide has impacts that span multiple generations – causing the so-called "water ...
Ecology
Apr 22, 2013
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(Phys.org) —Sex determining genes in marsupials have shed some light on how the Y chromosome, which determines the male sex in humans, will quickly degenerate and eventually disappear, according to a world-renowned evolutionary ...
Biotechnology
Apr 3, 2013
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The sequencing and assembly of the genome of the mountain pine beetle, Dendroctonus ponderosae, is published online this week in Genome Biology. The species is native to North America, where it is currently wreaking havoc ...
Biotechnology
Mar 26, 2013
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It's been more than fifty years since scientists discovered that the single-celled organism Tetrahymena thermophila has seven sexes. But in all that time, they've never known how each cell's sex, or "mating type," is determined; ...
Cell & Microbiology
Mar 26, 2013
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(Phys.org)—Indiana University biologists Teiya Kijimoto, Justen Andrews and Armin Moczek say it's time to chalk another one up for doublesex, the master regulatory gene at the terminus of the sex determination pathway that ...
Plants & Animals
Nov 30, 2012
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A University of Utah study produced new mathematical support for a theory that explains why men in some cultures often feed and care for their sisters' children: where extramarital sex is common and accepted, a man's genes ...
Other
Nov 27, 2012
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Scientists at the Institute of Molecular Biology (IMB) in Mainz have identified a protein essential for initiating the development of male sex organs. Loss of the gene Gadd45g results in complete sex reversal of male mice, ...
Cell & Microbiology
Nov 27, 2012
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Sex can trigger remarkable female responses including altered fertility, immunity, libido, eating and sleep patterns—by the activation of diverse sets of genes, according to research from the University of East Anglia.
Plants & Animals
Sep 11, 2012
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