In many species, including humans, the young are often more susceptible to infection than adults, even after accounting for prior exposure to infection. From an evolutionary perspective this may seem puzzling, as dying young ...
There has long been a debate among biologists over whether the evolution of new traits requires new genes to evolve or whether they can arise simply from the recruitment of existing genetic pathways, says developmental biologist ...
In humans and other mammals, the stem cells that give rise to all blood cells are located in the bone. But in fish, blood stem cells are found in the kidney. Since the late 1970s, when biologists first realized that blood ...
A new University of Colorado Boulder-led study sheds light on the genetic mechanisms that allowed sunflowers to undergo a relatively rapid evolutionary transition from wild to domesticated in just over 5,000 years.
NC State University researchers have shed new light on the evolution of fly chromosomes by identifying a gene indispensable for male survival in a devastating livestock pest species. What they found could have important implications ...
Researchers studying the impact of extreme climate conditions on biodiversity found a "tipping point" at which species, under pressure from dwindling food supplies due to climate change, must either evolve to take advantage ...
Poisonous moths use bright red spots to warn predators to avoid them—but natural variation in these wing markings doesn't provide clear indications of how toxic individual moths might be—new research shows.
Disgust has long been recognised as an emotion which evolved to help our ancestors avoid infection, but now researchers have been able to show the human disgust system is likely to be structured around the people, practices ...
Charles Darwin's On the Origin of Species (originally published in 1859) shares a deplorable fate with many other classics: it is known to everyone, yet rarely read.
Jun 19, 2018
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