Perception of sweetness in nectar evolved in hummingbirds during their genetic divergence from insectivorous swifts, their closest bird relatives.
12.
The increase in genetic divergence has not necessarily barred inter-sterility between isolated populations of " A . gallica ".
13.
Ensuing results demonstrated genetic divergence, suggesting these three drainages should be treated as distinct management units ( MUs ).
14.
The geographical isolation of the various populations of this mainly sedentary group has led to its genetic divergence and speciation.
15.
Populations from Santa Cruz and Floreana display some morphological and genetic divergence from populations of Fernandina Island and Isabela Island.
16.
The study also found a great deal of genetic divergence between the species, suggesting that these species are themselves very old.
17.
As a result, breeding could not occur anywhere except natal island, strengthening philopatry and ultimately leading to even greater genetic divergence.
18.
On a molecular genetics level, genetic divergence is due to changes in a small number of genes in a species, resulting in speciation.
19.
She argues that such alternative phenotypes are important since they can lead to novel traits, and then to genetic divergence and so speciation.
20.
It may be placed as the closest living relative of the foraminiferans, but rapid genetic divergence between several groups makes this difficult to confirm.
