To anyone with a basic understanding of evolution, it should seem puzzling that deadly genetic diseases, passed on from one generation to the next, haven’t eradicated themselves by now. Having one ...

The family of disorders known as ataxia can impair speech, balance and coordination, and have varying levels of severity. Scientists have identified a new member of this group of conditions which is ...

How do populations go from one genotype to another genotype if the intermediate phenotypes have lower fitness? The evolutionary forces that explain this make up the shifting balance theory. When ...

The same amino acid can be encoded by anywhere from one to six different strings of letters in the genetic code. Andrzej Wojcicki/Science Photo Library via Getty Images Nearly all life, from bacteria ...

Debate has long surrounded when humans first traveled into Sahul, the ancient landmass that is now Australia, New Guinea and ...

The contrast between genetic influences and environmental shifts underscores the dynamic interplay between evolution, genetics, and changing lifestyles in human populations. In 1957, evolutionary ...

Early evolutionists believed that the genetic basis of adaptation was micromutational. This view was supported by Ronald Fisher's classical mathematical analysis (of 1930) of his 'geometric model' of ...

This is a preview. Log in through your library . Abstract Confronted with variable environments, species adapt in several ways, including genetic differentiation, a jack-of-all-trades strategy, or ...