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 ...

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 ...

Additionally, ancient adaptation signals can be ... that appear to have undergone significant natural selection across these time periods. For example, genes associated with traits that allowed ...

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 ...

Medical and technological advances have allowed more of us to survive and to live longer, healthier lives. Does this make ...

The Bajau subsist by gathering shellfish on the sea floor In a striking example of natural selection ... obvious candidate for studying potential adaptations to this aquatic lifestyle.

The puzzle of the Galapagos finches Darwin's initial ideas about adaptation and the development ... when species diverged Chapter 4. Natural Selection (9:04) Darwin's marriage and the development ...

The proportion of well-adapted organisms in a population can increase over the generations by the process of evolution by natural selection.