Science news articles about 'evolutionary fitness'

... according to pup demand and their own fat reserves but did not exceed certain levels fitted with the group's theory that using energy at close to the maximum rate has costs for animals which may ...

... Kelly and Luc Bussière, travelled to the South Pacific to challenge the traditional predictor of evolutionary fitness that suggests strength is the most important factor for success in getting mates.

... – breed with another wild population, the resulting gene flow can reduce that population's evolutionary fitness. "Salmon have a life history that represents a long legacy of adaptation to local ...

A mystery of evolution is why an extra chromosome can be common across plants and animals yet have such drastically different results.    A human with an extra chromosome may have Down syndrome while ...

... (linked to erosion) to develop an understanding about the relationship between bacterial behavior, evolutionary fitness and environmental effectors. The results of their study, published Nov. 17 in ...