(Phys.org)—A trio of researchers with Trinity University in Texas has found that the development of dimorphism (physical differences between male and females of the same species) in songbirds appears to have been most strongly ...
Lucy and other members of the early hominid species Australopithecus afarensis probably were similar to humans in the size difference between males and females, according to researchers from Penn State and Kent State University.
Archaeology
Apr 28, 2015
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46
Stegosaurus, a large, herbivorous dinosaur with two staggered rows of bony plates along its back and two pairs of spikes at the end of its tail, lived roughly 150 million years ago during the Late Jurassic in the western ...
Archaeology
Apr 22, 2015
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421
The expression of a gene involved in female birds' color vision is linked to the evolution of colorful plumage in males, reports a new study from the University of Chicago. The findings, published Nov. 26 in the Proceedings ...
Plants & Animals
Nov 25, 2014
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(Phys.org) —Research published today looks at the evolutionary pathways to differences in bird plumage patterns between males and females – and concludes that birds are able to adapt their appearance with remarkable ease.
Evolution
Dec 18, 2013
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1
Which females do male lizards find to be the sexiest? Tracy Langkilde, an associate professor of biology at Penn State University, and Lindsey Swierk, a graduate student in Langkilde's lab, tackle this question by examining ...
Plants & Animals
Nov 5, 2013
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In the bird world, male and female blue tits are hard to distinguish for the human observer. However, in the UV-range, visible to birds, the male is much more colourful. A closer look at the monogamous mating system of these ...
Evolution
Apr 3, 2013
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(Phys.org)—Indiana University biologists Teiya Kijimoto, Justen Andrews and Armin Moczek say it's time to chalk another one up for doublesex, the master regulatory gene at the terminus of the sex determination pathway that ...
Plants & Animals
Nov 30, 2012
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Some disease-causing parasites are known to favor one sex over the other in their host species, and such differences between the sexes have generally been attributed to differences in immune responses or behavior. But in ...
Plants & Animals
Feb 28, 2012
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Scientists at Duke University Medical Center have found that larger fungal spores can be more lethal. Their findings about two different spore sizes of the fungus Mucor circinelloides, a pathogen that kills half or more of ...
Cell & Microbiology
Jun 16, 2011
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