The phrase "survival of the fittest" functions principally in evolutionary theory to describe the biological concept of ...

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.

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 ...

The diversity that is seen in the animal and plant kingdom occurs due to natural selection, migration, extinction, and genetic mutations. Charles Darwin visited the Galapagos Islands and grasped ...

No one was sure how animals or plants passed down traits. And Darwin knew that the lack of an explanation for heredity left a big gap in his theory of natural selection. In one of the great ...

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 ...

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 ...