Sentence examples for if speciation is defined from inspiring English sources

If speciation is defined as the evolution of reproductive isolation, the fossil record provides no evidence that an association between speciation and morphological change is necessary.

Speciation is defined as the evolution of reproductive isolation (reduced gene exchange) between populations (Coyne and Orr 2004).

When populations diverge in sympatry or parapatry, they must overcome the exchange of genes due to migration and hybridization (interbreeding) if speciation is to proceed.

When populations diverge in sympatry or parapatry, they must overcome the homogenizing effects of gene flow due to migration and hybridization (interbreeding) if speciation is to proceed.

This style of speciation is especially significant to evolutionary theory because if speciation is primarily allopatric, then the forces that produce geographic barriers play a big role in causing evolution.

Speciation could also cause genome-wide increases in substitution rate if speciation is typically associated with population subdivision [ 13, 14].

Assuming neutrality, retention of ancestral polymorphism is likely if speciation is fast relative to drift within the populations [ 41].

However, if speciation is largely non-adaptive, then micro- and macroevolution are largely decoupled (Stanley 1975; Gould 2002).

Otherwise (if there is no overlap) the node is defined as a speciation node leading to orthologous proteins.

Otherwise the node is defined as a speciation node.

Each factor, such as ecological differences or geographic separation, is defined and discussed with examples that illustrate the mechanics of how speciation occurs because of that factor.