Science news articles about 'evolutionary pressure'

  • Will Our Future Brains Be Smaller?

    New research has shown that the evolutionary pressures arising from the older, faster, but less accurate, part of the brain may have shaped the more recent development of the slower-acting but more ...
  • Rare case explains why some infected with HIV remain symptom free without antiretroviral drugs

    ... in elite suppression not only lowers the viral count in the body, but also exerts selective, evolutionary pressure on the original strain of HIV to mutate away from the strong version that initially ...
  • Ripple effect: Water snails offer new propulsion possibilities

    ... that the transfer of technology between life forms and synthetic constructs is attractive because evolutionary pressure typically forces living organisms to become highly optimized and efficient. ...
  • Evolution's new wrinkle

    ... and implies we all have this wonderful piece of machinery inside that's responding optimally to evolutionary pressure." The authors sought to identify the underlying cause for this self-correcting ...
  • New research shows how gene function drives natural selection in important class of genetic elements

    ... , a genetics post-doctoral research assistant at UGA and lead author of the research. Understanding the evolutionary pressures between host genome and transposable element will in the future be of ...
  • Putting Evolution in Reverse

    ... Month, Day 2 How do two populations change genetically when they are subjected to different evolutionary pressures? To answer this question, many intrepid evolutionary biologists have trudged out ...
  • Deciphering the Tracks of Evolution in Our Genomes

    ... -day chimps much more than it resembled us. Both humans and chimps have been changing under evolutionary pressure since our lineages split, but humans have obviously picked up traits that make us ...
  • Selectionism can only take us so far

    ... which suddenly decides to move into a new valley can defeat the best-laid plans of its former evolutionary pressures. And we can see that an alien observer might well suppose that it would be quite...
  • Unfolding 'nature's origami'

    ... Professor Radford. "We studied it partly because of its simplicity and partly because of the known evolutionary pressure on the protein to fold correctly to enable the bacteria to survive." The study ...
  • A dead gene comes back to life in humans

    ... , also suggests a remarkable functional plasticity in genes that experience a variety of evolutionary pressures over time. Such malleability may be especially useful for genes that help in the fight ...
  • Evolution of New Genes in Flies

    ... ): But there are more lessons here. Mating behavior is in fact an excellent place to look for lessons about evolution, since reproduction is subject to strong evolutionary pressures. read more
  • Remembrance of things past influences how female field crickets select mates

    ... can change their behavior based on remembered social information. "Usually, we think of evolutionary pressure, or selection, as a force in the physical environment – like climate or food availability ...
  • Natural-born divers and the molecular traces of evolution

    ... we sometimes get during strenuous exercise). In order to confirm that this was indeed the result of evolutionary pressure, they went on to study the molecular sequence of myoglobin in small aquatic ...
  • Scientists solve mystery of Scotland's shrinking sheep

    ... Scottish island - known in Scottish Gaelic as Hirta - that are refusing to bow to conventional evolutionary pressure, which says big is best. Instead, they have steadily decreased in size since the ...
  • Secrets of insect flight revealed

    ... Australian Defence Force Academy (UNSW@ADFA). "Biological systems have been optimised through evolutionary pressures over millions of years, and offer many examples of performance that far outstrips ...

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