A new method to estimate sexual dimorphism in fossil species near the base of our family tree has been just published in the Proceedings of the National Academy of Science (PNAS), through the joint ...
(A) Relative urinary cystine concentration of Slc3a1 KO and WT mice from both sexes. (B) Typical hexagonal cystine crystals from the urine of Slc3a1 KO and WT mice. Scale bar,100 μm. (C) Bladder ...
Females and males differ in many ways and yet they share the same genome. The only exception is the male Y chromosome. Using beetles as a study system, new research shows that despite of the Y ...
The eyes of the male dragonfish grow larger for mate seeking, a sexual dimorphism that makes the dragonfish an anomaly in vertebrate evolution, researchers report. A small but ferocious predator, the ...
I was looking into the heavy brush, trying to locate an orchard oriole I knew had flown into the cover. Suddenly a blur of magnificently bright red burst onto the scene and settled on a branch in the ...
Male and female black widow spiders exhibit striking sexual dimorphism. Females are significantly larger, darker, and possess the iconic red hourglass, indicating their dominance and reproductive role ...
Understanding this crucial point in human history has focused on the Dmanisi Hominid Archaeological Site in Georgia where scientists now believe two human species coexisted at the site.
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