We often imagine the human evolutionary tree as a grander version of a personal family tree – indeed, researchers tend to talk about parent, daughter and sister species. In this picture ...

Their study focused on the genetic basis of species incompatibility. They crossed Ae. aegypti, a major global arboviral disease vector, and its sibling species, Ae. mascarensis, from the Indian Ocean.

The team crossed Ae. aegypti, a major global arboviral disease vector, and its sibling species, Ae. mascarensis, from the Indian Ocean. When offspring is crossed back with one parent ...