News tagged with evolutionary biology

A vertebrate family reunion

By demonstrating the close 'relatedness' of two primitive jawless fish, scientists begin to assemble a more accurate depiction of the early history of vertebrate evolution.

Apr 22, 2013
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Reproductive tract secretions elicit ovulation

Eggs take a long time to produce in the ovary, and thus are one of a body's precious resources. It has been theorized that the body has mechanisms to help the ovary ensure that ovulated eggs enter the reproductive tract at ...

Apr 17, 2013
not rated yet 0 | with audio podcast

How some leaves got fat: It's the veins

A "garden variety" leaf is a broad, flat structure, but if the garden happens to be somewhere arid, it probably includes succulent plants with plump leaves full of precious water. Fat leaves did not emerge ...

Apr 11, 2013
5 / 5 (2) 0 | with audio podcast

Invasive crabs help Cape Cod marshes

(Phys.org) —Ecologists are wary of non-native species, but along the shores of Cape Cod where grass-eating crabs have been running amok and destroying the marsh, an invasion of a predatory green crabs has ...

Apr 03, 2013
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