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All Articles Tagged As: males
Scientists have utilized recently described genetic variations on the part of the Y chromosome that does not undergo recombination to significantly update and refine the Y chromosome haplogroup tree
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Research published today in Nature Genetics shows that some rearrangements of the human genome occur more frequently than previously thought. The work is likely to lead to new identification of genes involved in disease and to improve diagnosis of genomic disease.
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 | Handgrip strength is an important measure of health and reproductive fitness. ...> Full Article |
Sexy dads produce sexy sons, in the insect world at least. While scientists already knew that specific attractive traits, from cricket choruses to peacocks' tails, are passed on to their offspring, the heritability of attractiveness as a whole is more contentious. Now, new research by the University of Exeter, published in the journal Current Biology, shows that attractiveness is hereditary.
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 | Adding another layer of competition to the mating game, scientists are reporting possible biochemical proof that the reproductive system of female mammals can "sense" the presence of sperm and react to it by changing the uterine environment. This may be the molecular mechanism behind post-copulatory sexual selection, in which females that have mated with several partners play a role in determining which sperm fertilizes their egg. ...> Full Article |
 | A gene has been found in male cichlid fish that evolved to lure female fish so that male cichlids can deposit sperm in the females mouths. A study in the online open access journal BMC Biology reveals that the gene is associated with egg-like markings on the fins of cichlid fishes and uncovers the evolutionary history of these markings, which are central to the success of the fishes' exotic oral mating behaviour. ...> Full Article |
The observation that males evolve more quickly than females has been around since 19th century biologist Charles Darwin noted the majesty of a peacock's tail feather in comparison with the plainness of the peahen's.
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The humble fruit fly has played a lead role on the scientific stage for more than a century. Tiny picnic pests to us, flies from a single species, Drosophila melanogaster, have provided a bounty of Nobel Prize-winning discoveries for researchers in the fields of genetics and developmental biology, and helped serve as models of human diseases such as Parkinson's and cancer.
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 | Daughters inherit the same X chromosome from their father. ...> Full Article |
 | Female animals that mate with multiple partners may be doing so to ensure the optimum health of their grandchildren, according to researchers at the universities of Leeds and Exeter. ...> Full Article |
 | Some leading scientists who have studied warfare through the ages have long suggested that humans — the males of the species, at least — have little choice when it comes to slaughtering one another in great numbers. Such warlike behavior, the scholars contend, is hardwired into the human brain. ...> Full Article |
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