Polyphenisms are adaptations in which a genome is associated with discrete alternative phenotypes in different environments.
The mere existence however, of traits that benefit the group is not enough to show that they are adaptations; in order to be an adaptation, under Williams' view, the trait must be an engineering adaptation that evolved by natural selection.
One approach argues that the affective mechanisms that are dysregulated in depression are adaptations, whilst a second approach argues that depression itself is an adaptation.
This is important, since these are exactly the kind of adaptations to be expected in a recently inhabited land.
That could be an advantageous adaptation in a hot environment, the scientists argue.
Dark skin may be an adaptation in the tropics to prevent cellular damage from UV radiation, and light skin may be an adaptation in higher latitudes to allow the formation of vitamin D (Yuen and Jablonski, 2010).
It is shown that an adaptation map can be found in a measurement sequence not specially designed for adaptation.
Adaptations are preserved in a population by natural selection.
"What's important is that adaptations are done in a way that students don't feel singled out.
Apart from structural alterations, endocrine adaptations are important in a mechanistic sense to explain the consequences of perinatal programming.
