Darwin's view of evolution proposes that new species arise from Blank______.Multiple choice question.species migrationexisting speciesinbreedingspecial creation

According to the phylogenetic species concept, a species is a population that Blank______.Multiple choice question.has evolved independently of other groups of populationshas substantial morphological differences from other populationsis reproductively isolated from other populations

If two species that have evolved over time to be completely reproductively isolated suddenly come into contact with one another, they will likely Blank______.Multiple choice question.remain distinct specieshybridize, forming a third specieshybridize, initiating gene flow and homogenizing the gene pools

A common criticism of evolution is that selection only produces Blank______ changes and cannot produce the variety of Blank______ documented in the fossil record.Multiple choice question.minor; breedsminor; speciessubstantial; extinctionssubstantial; breeds

Organisms may be unable to breed because of physical characteristics, location, habitat, or even differing courtship behaviors; this is called Blank______.Multiple choice question.the evolutionary species conceptthe phylogenetic species conceptreproductive isolation

Darwin proposed that the mechanism of evolution is Blank______.Multiple choice question.Hardy-Weinberg equilibriumpunctuated equilibriuminheritance of acquired characteristicsnatural selection