Question 371pts Two populations that are geographically isolated will always diverge into two specie

Question 371pts Two populations that are geographically isolated will always diverge into two species.TrueFalseFlag this QuestionQuestion 381pts Which of the following must take place for speciation to occur?polyploidyhybridizationreproductive isolationgeographic isolationFlag this QuestionQuestion 391pts A large population of animals is split in two by a physical barrier. Over time, the genetic makeup of the two resulting populations becomes more and more different, until each population becomes a separate species. This is an example ofsympatric speciation.allopatric speciation.genetic drift.natural selection.Flag this QuestionQuestion 401pts Today’s diversity of mammals originated with an adaptive radiation that occurred 65 million years ago. This adaptive radiation occurred becausethe evolution of a novel trait that gave the animals an advantage.the ancestral species colonized a new continent.ecological niches were opened up and predators were removed.increased competition led to rapid natural selection.Flag this QuestionQuestion 411pts Mass extinctions frequently result in adaptive radiation because they lead tomechanical isolation in other species.allopatric speciation.ecological isolation in other species.postzygotic barriers in other species.Flag this QuestionQuestion 421pts The formation of a new speciestakes at least 1 million years.never happens.is evolutionarily insignificant.can occur slowly or rapidly.