Question

True or False.

Macrovicariant speciation is speciation that occurs when a single species is split into two or more large subgroups that are found in different places.

A full explanation would be tremendous,

Thank you!

Answer 1

Due to the presence of physical barrier between the subpopulations , the geneflow between the population will decrease or decrease to 0. This will slowly result in different dynamics taking place in the subpopulations, slowly they will become reproductively isolated due to many evolutionary effects like mutations , specific mating, different environmental conditions, genetic drift acting, founder effects, and natural selection etc.

All these effects will combine and shape the genotype frequencies and thus allelic frequency in th populations to differ and slowly loose or gain some new allele varients or genes. Thus slowly differenjng from each other , and evolving into new species.

So, it is True.