The evolution and maintenance of parthenogenetic species are a puzzling issue in evolutionary biology. Although the genetic mechanisms that act to restore diploidy are well studied, the underlying ...

1. Geographical variation in the song of Zonotrichia capensis, the Rufous-Collared Sparrow, in northwestern Argentina is discussed. Boundaries between song 'dialects' appear to have been stable for at ...

The newfound species belongs to the genus Paranthropus, whose nickname is "nutcracker man." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A 1.4 ...

Bulletin of the Torrey Botanical Club, Vol. 112, No. 3 (Jul. - Sep., 1985), pp. 295-311 (17 pages) ...

It's time to rewrite the history textbooks, as a distant new member of our ancestral family tree has been discovered. Scientists say a new, never-before seen species of human ancestor roamed the Earth ...