The choice of a better half is song of the main mechanisms at hand which evolution can lift place.
It is characterized nigh the “choosy retort of animals to settled stimuli”, which manifests itself as behavior.
In other words, first animals come into association with potential partners, they first assess the distinct qualities of that sharer, such as resources or phenotypes, and assess whether these particular qualities are beneficial.
The sequel of this assessment leads to unusual reactions.
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