Tandem repeat (TR) sequences occur when short DNA motifs are repeated head-to-tail along chromosomes and are a major source of genetic variation. Population genetic models of TR evolution have focused ...

Sexual size dimorphism (SSD) is highly prevalent in nature. Several hypotheses aim to explain its evolution including sexual selection, differential equilibrium and ecological niche divergence.

When males are forced to compete for females, new species form more rapidly. This has been shown in a new study where the researchers compared beetles allowed to mate freely with groups of the same ...

The second science -- Simple selection -- The genetic and ecological context of selection -- History, chance, and necessity -- The rate of genetic deterioration -- The rate of environmental ...

Molecular evolutionary biologist Masatoshi Nei says Darwin never proved natural selection is the driving force of evolution — because it isn't. In a cavernous concert hall, before an eager audience of ...

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...