News tagged with evolutionary biology

The origins of a genetic switch

Cilia, microscopic whip-like organelles that protrude from the surface of many cell types, are almost ubiquitous. They are present in all eukaryotes—organisms whose cells have a nucleus—and have diversified ...

Jan 02, 2013 5 / 5 (3) 1

Dry leaves make for juicy science

A research team consisting of a University of Arizona graduate student, about 40 middle school students and a UA research lab has undertaken the first systematic study looking at how much plant leaves shrink ...

Nov 20, 2012 not rated yet 0

It pays to cooperate

Many species exhibit cooperative survival strategies—for example, sharing food or alerting other individuals when a predator is nearby. However, there are almost always freeloaders in the population who will take advantage ...

Nov 13, 2012 5 / 5 (2) 0 | with audio podcast