How genes trace life on Earth

A complete tree of life – showing how and when organisms are related to each other – has long been desired by biologists, but obscured by the vagaries of the fossil record.

Enhancing green sea urchin egg production

Enhancing green sea urchin egg production to aid Maine's depressed urchin market is the research focus of a University of Maine marine bioresources graduate student.

Study: Carib reefs need parrotfish, sea urchins (Update)

Colorful parrotfish and spindly sea urchins are the key to saving the Caribbean's coral reefs, which may disappear in two decades if no action is taken, a report by several international organizations said Wednesday.

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 to perform ...

page 18 from 22