Which of these options is NOT an example of a hypothesis that supports the occurrence of ecological speciation:     ecologically divergent pairs of populations should be more reproductively isolated from one another than more ecologically similar pairs of populations     traits that lead to divergent adaptations between populations should lead to reproductive isolation between those populations as well     levels of gene flow between ecologically divergent populations should decrease as populations become more ecologically divergent     ecologically divergent populations should differ in use of signals that relate to mate selection

In sexual reproduction, gametes that are large have the advantage of providing a good amount of resources for the developing offspring. Gametes that are small have the advantage of mobility. We call large gametes eggs and small gametes sperm. Medium-sized gametes neither have enough resources for the developing offspring nor they have the capacity of mobility and hence, are eliminated by natural selection. Which type of natural selection is this an example of? -stabilizing selection -sexual selection -directional selection -disruptive selection

Some females seem to prefer the blue color and some females seem to prefer yellow color. If this a diversifying/ disruptive selection, how could diversifying/disruptive selection result in sympatric speciation in this example?

A factor that is always necessary for the formation of a new spieces is  reproduction at different times geographic barriers different mating behaviors reproductive isolation   Genetic differences between population tend to be reduced by  mutation the bottleneck effect gene flow the founder effect   Which of the following factor would not contribute to allopatric speciation a population is geographically separated, leaving one small population in which genetic drift occurs different mutations begin to distinguish the gene pools of the separated populations a population becomes geographically isolated from the original population gene flow between the two separated populations continues to occur an isolated population is exposed to different selective pressures than the original population   Male lion having a mane while female lion is an example of  intrasexual selection hybridization intersexual selection sexual dimorphism