Sentence examples for hereditary variations from inspiring English sources

This can happen through natural selection operating on non-genetic hereditary variations.

Darwin demonstrated that natural selection sorts among hereditary variations, for example, the height of an organism, its weight, the color of its coat and so on.

As each inheritance system can lead to hereditary variations, there may be multiple lineages related to the production of a single organism and even single phenotypic traits.

Thus, if we aim to give a general account of possible evolutionary change we may start by examining and classifying hereditary variations (Jablonka & Lamb 2005).

As it is hereditary variations that are needed for evolution via natural selection, Jablonka and Lamb set out to study different inheritance systems (where system is understood roughly to mean a set of interacting factors and mechanisms) by identifying different kinds of hereditary variation (Jablonka 2001; Jablonka & Lamb 1995, 2005).

The Darwinian premise is that genetic variations—"mutations" including chromosomal breaks and rearrangements) in current terminology but "hereditary variations" in Darwin's occur "randomly," that is, irrespectively of environmental conditions and adaptive "need".

The central argument of Darwin's theory of evolution starts with the existence of hereditary variation.

The necessity of hereditary variation for evolutionary change to occur can be understood in terms of the gene pool.

Life-forms present on Earth today have evolved from ancient common ancestors through the generation of hereditary variation and natural selection.

Hereditary variation also entails two mechanisms the spontaneous mutation of one variant into another and the sexual process that recombines those variants (see recombination) to form a multitude of variations.

Hereditary variation, in turn, may be accounted for in terms of inheritance mechanisms, hence by accounts of inheritance systems.