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.

Applying new analytic methods to nearly 16,000 ancient genomes reveals natural selection has acted on hundreds, not dozens, of genes in West Eurasia over the last 10,000 years. More than half of the ...

By analyzing the genetic material of thousands of ancient humans, researchers have mapped how natural selection influenced ...

There are approximately 7000 languages in the world today, and these languages are unique in terms of their phonology, morphology, and grammar. Such diversity is typically observed in the biological ...

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 ...