Science news articles about 'evolutionary shift'

... 's Children's Research Hospital in Tennessee and the Federal University of Para, Brazil, have found an evolutionary mechanism that provides insight into how important changes in brain structure of ...

... a glitch in DNA copying that occurs when the process stalls at a critical point and then shifts to a different genetic template, duplicating and even triplicating genes or just shuffling or deleting ...

... that dinosaurs underwent explosive species diversification just before they were wiped out is an illusion, for the beasts' main evolutionary shifts took place millions of years before, a study says.

(PhysOrg.com) -- In the developing fetus, cell growth follows a very specific schedule. In the eye's retina, for example, cones -- which help distinguish color during the day -- develop before the ...

Minor differences in the timing of cell proliferation can explain the large differences found in the eyes of two species -- owl monkeys and capuchin monkeys -- that evolved from a common ancestor.

... were storing grain long before they learned to domesticate crops, a new study indicates. Granaries show “critical evolutionary shift in the relationship between people and plant foods,” study says.

... the world's oldest know granaries. The appearance of the granaries represents a critical evolutionary shift in the relationship between people and plant foods. Anthropologists consider food storage ...

... , published in the November 2009 issue of the journal Biological Reviews, predicts rapid evolutionary shifts in secondary sexual traits and also in what the animals recognize as competitors. "My ...