UW Today

evolution


February 18, 2015

Fearless birds and shrinking salmon: Is urbanization pushing Earth’s evolution to a tipping point?

Alberti_cropped_bird_featurephoto

We’ve long known that humans and our cities affect the ecosystem and even drive some evolutionary change. What’s new is that these evolutionary changes are happening more quickly than previously thought, and have potential impacts not in the distant future — but now.


January 29, 2014

Neanderthal lineages excavated from modern human genomes

Neanderthal Child

A fossil-free method of sequencing archaic DNA may provide insight into human evolution.


July 3, 2013

Great ape genetic diversity catalog frames primate evolution and future conservation

Belinga, a great ape

A model of great ape history during the past 15 million years has been fashioned through the study of genetic variation in a large panel of humans, chimpanzees, gorillas and orangutans.


March 29, 2013

Head-on collisions between DNA-code reading machineries accelerate gene evolution

Houra Merrikh Samuel Million-Weaver

Bacteria speed up their evolution by positioning specific genes along the route of expected traffic jams in DNA encoding. Collisions can result in mutations.


March 4, 2013

‘True grit’ erodes assumptions about evolution

Large cliff of white ashy material surrounded by rock cliffs when two researchers working the face

New work in Argentina where scientists had previously thought Earth’s first grasslands emerged 38 million years ago, shows the area at the time covered with tropical forests rich with palms, bamboos and gingers. Grit and volcanic ash in those forests could have caused the evolution of teeth in horse-like animals that scientists mistakenly thought were adaptations in response to emerging grasslands.


February 19, 2013

Mutant champions save imperiled species from almost-certain extinction

Gloved had holds plate with dozes of tiny wells of reddish orange hue

Species facing widespread and rapid environmental changes can sometimes evolve quickly enough to dodge the extinction bullet. UW scientists consider the genetic underpinnings of such evolutionary rescue.


December 26, 2012

Piranha kin wielded dental weaponry even T. rex would have admired — with video

Head, teeth and ribs of a piranha skeleton

Taking into consideration size, an ancient relative of piranhas weighing about 20 pounds delivered a bite with more force than prehistoric whale-eating sharks or – even – Tyrannosaurus rex.


December 6, 2012

Moths wired two ways to take advantage of floral potluck

Photographs of the moth Manduc sexta taken as possible cover photos for Science Magazine

Moths are able to enjoy a pollinator’s buffet of flowers because of two distinct “channels” in their brains, scientists have discovered.