or to the movement of gametes (e.g., as a consequence of pollen transfer among plants). In the absence of natural selection and genetic drift, gene flow leads to genetic homogeneity among demes ...

Plants withered and finches grew hungry ... The Grants had documented natural selection in action. While beak size is clearly related to feeding strategies, it is also related to reproduction.

In his famous experiments on pea plants, Gregor Mendel rejected this ... the population conforms to the following assumptions: Natural selection is not acting on the locus in question (i.e ...

Biodiversity close biodiversityThe range of animals and plants in a given area. means having as wide a range of different species in an ecosystem as possible. It is important to conserve the ...

Charles Darwin close Charles DarwinAn English naturalist (1809-1882). In 1859 Darwin published On the Origin of Species, which outlined his theory of evolution. was an English naturalist who ...

Darwin's theory of natural selection provides an explanation for why organisms develop traits that help them survive and reproduce. Because of this, death is often seen as a failure rather than a ...