Category archives: Evolution

Ever since Wallace

Ever since Wallace

BiologyEvolution

By Rafael Medina

Alfred Russel Wallace (1823-1813) is especially known as one of the discoverers of evolution by natural selection. However, among his various contributions to the development of modern biology we can also consider the British naturalist as the father of biogeography: the study of the spatial distribution of organisms over the surface of the planet. Wallace’s […]

Hybridization: no longer the bad guy

Hybridization: no longer the bad guy

BiologyEvolutionGenetics

By Rafael Medina

It is interesting how some ideas get stuck in our minds even long after it is proved that they are incorrect or incomplete. Haeckel’s Recapitulation Theory, which states that during the embryological development of an organism it undergoes through different stages recalling the evolutionary history of its ancestors (ontogeny recapitulates phylogeny), is considered obsolete nowadays […]

When should a man be more interested in caring for his sister’s children than his wife’s?

When should a man be more interested in caring for his sister’s children than his wife’s?

AnthropologyEvolutionGenetics

By César Tomé

From the genetic point of view, when should a man be more interested in caring for his sister’s children than his wife’s? A quantitative analysis of Alan Rogers, University of Utah, shows that this behaviour should be the choice in populations where adultery is common or permitted. In the animal world, males caring for offspring […]