Elaborate genitalia have been hypothesized to evolve through post-copulatory competition among males for fertilization of female ova [1]; female choice for males that are either good stimulators or of higher quality [1], [5]; or from an arms race between the sexes over the control of insemination and fertilization [1], [2], [6] [8].
This is because V1R repertories are hypothesized to evolve rapidly and are likely lineage-specific, resulting in relatively few one-to-one orthologs between species [ 18, 25].
Alternatively, following Alfred Russel Wallace, mate preferences can be hypothesized to evolve by strong natural selection (Cronin 1991; Prum 2010, 2012).
Polygyny is hypothesized to evolve when environment or behavior brings about female clumping, an abundance of female mates during a limited period of time, providing an opportunity to increase overall fitness (Emlen and Oring, 1977; Baena and Macias-Ordonez, 2015).
The first was a list of genes comprised of core mitochondrial cellular annotations, which are hypothesized to evolve along tight co-adaptive trajectories with their mtDNA-encoded counterparts [ 6, 18].
Sociality is hypothesized to evolve via the subsocial route through the elimination of pre-mating dispersal, the transition to intra-colony mating, and the evolution of cooperation among individuals.
Their neural architecture exhibits a suite of characteristics associated with greater sensitivity to others [19, 20], and their sociality is hypothesized to have evolved due to selection against male aggression [21 23].
Their neural architecture exhibits a suite of characteristics associated with greater sensitivity to others [19, 20], and their sociality is hypothesized to have evolved due to selection against male aggression [21-23].
Hyperaccumulation is hypothesized to have evolved to interfere with other competing plant species ('elemental allelopathy') or to protect against insect herbivores ('elemental herbivory defense'), although a variety of other explanations have also been proposed (Boyd and Martens 1998; Boyd and Jaffré 2001; Boyd 2012).
It was hypothesized to have evolved because the whale swims on its right side when surface lunging and it sometimes circles to the right while at the surface above a prey patch.
