evolution
How The Grass Carp Went Vegetarian
The draft genome suggests that differences in the mevalonate pathway and steroid biosynthesis in liver aided the grass carp's transition from a carnivorous to a herbivorous diet.
Eardrums Evolved Twice, Scientists Say
Compared to those in lizards and birds, mammalian eardrums have had an entirely different evolutionary history.
How Orchid Flower Petals Get Their Shape
A molecular tug-of-war between two protein complexes gives rise to the amazing diversity of petal shapes in orchids, scientists say.
Evolution Puts Checks On Virgin Births
Even in species that are able to reproduce clonally, sexual stimulation appears to be required for optimal fertility.
Supergene Controls Batesian Mimicry In Butterflies
An inversion of the supergene containing the doublesex gene determines whether or not female butterflies can mimic their unpalatable relatives.
Beards As Badges Of Honor?
In primates, ostentatious markings could serve to make males more attractive to females and more intimidating to other males.
How A Carnivorous Plant Shapes Its Leaves
Researchers have determined how carnivorous plants form their unique pitcher-shaped leaves.
A 600 Million Year Old Sponge
An extraordinarily well-preserved fossil discovered in China sheds light on the evolution of sponges.
Why Do We Enjoy Music?
Having a sense of rhythm was essential for our ancestors to adapt to their environment, scientist suggests.
