Study sheds light on 'reinforcement' in wildflowers
Plants or animals using color to attract a mate is fairly common in nature, but for Phlox drummondii, a wildflower commonly known as Drummond's phlox, just the opposite is true.
UMSL scholar examines evolution of learning
Why do monkeys learn to be afraid of snakes and not flowers? Is this knowledge the result of evolution by natural selection? Did the monkeys that couldn't learn that association quickly die and not reproduce?
Wild sheep show benefits of putting up with parasites
In the first evidence that natural selection favors an individual's infection tolerance, researchers from Princeton University and the University of Edinburgh have found that an animal's ability to endure ...
Biologists link sexual selection and placenta formation
Sexual selection refers to species' selection for traits that are attractive to the opposite sex. This special type of natural selection enhances opportunities to mate, the tail of male peacocks being an ...
When genes play games: Algorithm helps explain sex in evolution
What do you get when you mix theorists in computer science with evolutionary biologists? You get an algorithm to explain sex.
Research on bird beaks delivers powerful insights on variation
Evolutionary biologists have long held up songbirds, particularly the Galapagos finches first described by Charles Darwin, as an example of natural selection at work. In order to exploit different environments ...
There's more than one way to silence a cricket
For most of us, crickets are probably most recognizable by the distinctive chirping sounds males make with their wings to lure females. But some crickets living on the islands of Hawaii have effectively lost ...
Evolutionary roots of self control: Study of 13 primate species links 'intertemporal choice' to natural selection
A chimpanzee will wait more than two minutes to eat six grapes, but a black lemur would rather eat two grapes now than wait any longer than 15 seconds for a bigger serving.
A new type of heredity described in Paramecia
Considered as an obsolete theory for many years, the transmission of acquired traits has returned to the forefront of debate thanks to the development of epigenetic research. In this context, a team from the Institut de biologie ...
Getting to the root of enamel evolution
Along with our big brains and upright posture, thick tooth enamel is one of the features that distinguishes our genus, Homo, from our primate relatives and forebears. A new study, published May 5 in the Jo ...
Shifting evolution into reverse promises cheaper, greener way to make new drugs
A proof-of-concept experiment has shown that, by shifting evolution into reverse, it may be possible to use 'green chemistry' to make a number of costly synthetic drugs as easily and cheaply as brewing beer.
Natural selection has altered the appearance of Europeans over the past 5,000 years
Anthropologists at Johannes Gutenberg University Mainz and geneticists at University College London, working in collaboration with archaeologists from Berlin and Kiev, have analyzed ancient DNA from skeletons ...
Serpentine ecosystems shed light on the nature of plant adaptation and speciation
Plants that live in unusual soils, such as those that are extremely low in essential nutrients, provide insight into the mechanisms of adaptation, natural selection, and endemism. A seminal paper by Arthur ...
Can monogamy undermine intelligence?
Yes. At least over 100 generations in Drosophila melanogaster vinegar flies.