Question

Define natural selection and genetic flow and speciation

Answer 1

Natural selection, genetic drift, andgene flow are the mechanisms that cause changes in allele frequencies over time. ... As Charles Darwin (1859) argued in On the Origin of Species, if the following conditions are met,natural selection must occur: There is variation among individuals within a population in some trait.

Answer 2

Speciation: is the evolution of reproductive isolation among once interbreeding populations , that is the development of one or more species from an existing species

Genetic drift: over generation, genetic drift may lead to the accumulation if different changes which lead to the formation of new species

Natural selection: may work differently in different locations. Due to this variation may occur which lead to the formation of new species