Sentences with phrase «driven by natural selection»

The incidence of different traits, or alleles, in a population is driven by natural selection and genetic drift, which can randomly reduce genetic variation.

Mr Esquerre said not all evolution was driven by natural selection, but examples such as pythons and boas reinforce its importance in shaping biological diversity.

But the neat concept of adaptation to the environment driven by natural selection, as envisaged by Darwin in On the Origin of Species and now a central feature of the theory of evolution, is too simplistic.

There is just evolution; genetic mutations driven by natural selection.

Not exact matches

Evolution in a pure Darwinian world has no goal or purpose: the exclusive driving force is random mutations sorted out by natural selection from one generation to the next.»

Charles Darwin established evolution as a viable theory by articulating its driving force, natural selection (Alfred Russel Wallace is recognized as the co-discoverer of this concept).

Some experiments were considered quirky by 19th century standards, but the work provided data supporting Darwin's notions about trait variability in a population and how natural selection drives changes in populations over time.

Natural selection creates a dynamic, ever - changing biota, driven to evolve by genetic variation, adaptation to different environments, competition for limited resources, and cooperative exchanges among individuals.

Although this natural gene drive is unpredictable and scattershot, Burt showed that certain tricks of molecular biology could achieve the same results: causing a gene to be inherited by many more organisms through many generations than standard genetics and natural selection allow.

The 19th - century racist catchphrase survival of the fittest obscures the reality that «evolution through descent with modification by natural selection» is driven by differential reproduction.