While malaria is the best-understood example of an infectious ... Investigating the signatures of natural selection can help elucidate the evolutionary adaptations that have allowed humans to ...

Many people are. In fact, the ability to digest lactose may be an example of adaptive evolution in the human lineage. Although the study of natural selection in humans is still in an early stage ...

A classic example of natural selection at work is the origin of giraffes’ long necks. The ancestors of modern giraffes were animals similar to deer or antelope, with necks of ordinary length.

That would have stunned Darwin, who thought natural selection operated over vast ... with bigger beaks. So the adaptation to a changed environment led to a larger-beaked finch population in ...

unpredictable fray of natural selection. With two partners combining varied genes, a species has more flexibility to adapt to changing environments. There are, however, rare examples of asexual ...

Which is fortunate for me, because she has certain adaptations that I wouldn ... The evolution of the bacteria is an example of natural selection. Evolutionary trees are diagrams that show how ...

This is the most explicit and concise description and definition of natural selection in On the Origin ... this is the essence of adaptation. “On the other hand, we may feel sure that any ...

Natural selection is a mechanism of evolution ... so the fruit’s adaptation no longer has a survival benefit. Selection for adaptation is not the only cause of evolution. For example, species change ...