Why aren't house sparrows as big as geese?
Why are house sparrows the exact size they are? Why aren't they hummingbird size or as large as geese?
Evolution news
6 hours ago
in
Scientists edit butterfly wing spots and stripes
An international research team working at the Smithsonian Tropical Research Institute in Panama knocked-out a single control gene in the DNA of seven different butterfly species. In the Sept. 18 Proceedings of the National ...
Scientists create alternate evolutionary histories in a test tube
Scientists at the University of Chicago studied a massive set of genetic variants of an ancient protein, discovering a myriad of other ways that evolution could have turned out and revealing a central role for chance in evolutionary ...
New study contradicts assumption that true frogs diversified as they expanded their range around globe
Evolutionary biologists long have supposed that when species colonize new geographic regions they often develop new traits and adaptations to deal with their fresh surroundings. They branch from their ancestors and multiply ...
Older fathers found to produce less fertile offspring
Evolutionary geneticists spot natural selection happening now in people
Human evolution can seem like a phenomenon of the distant past which applies only to our ancestors living millions of years ago. But human evolution is ongoing. To evolve simply means that mutations – the accidental changes ...
When ancient fossil DNA isn't available, ancient glycans may help trace human evolution
Ancient DNA recovered from fossils is a valuable tool to study evolution and anthropology. Yet ancient fossil DNA from earlier geological ages has not been found yet in any part of Africa, where it's destroyed by extreme ...
The evolutionary origin of the gut
How did the gut, the skin and musculature evolve? This question concerns scientists for more than a century. Through the investigation of the embryonic development of sea anemones, a very old animal lineage, researchers from ...
Birds' unique skulls linked to young dinosaur brains
Bird skulls and brains look like those of young dinosaurs, providing clues to their unique evolution and modern success.
Why it's difficult to predict evolutionary fate of a new trait
The phrase "survival of the fittest" makes the principle of evolution by natural selection easy to understand—individuals with a trait that adapts them well to their circumstances are more likely to pass that trait along. ...
