The process by which one species splits into two or more species
_____ defines a species as a group of populations whose members have the potential to interbreed in nature and produce fertile offspring. Therefore, members of a species are similar because they reproduce with each other.
Biological species concept
_____ defines a species by its ecological role or niche
Ecological species concept
_____ defines a species as the smallest group of individuals that shares a common ancestor
Phylogenetic species concept
_______ classifies organisms based on observable physical traits
Morphological species concept
Populations of the same species are geographically separated, isolating their gene pools
occurs when a new species arises within the same geographic area as a parent species
in which cells have more than two complete sets of chromosomes.
The evolution of many diverse species from a common ancestor
regions in which members of different species meet and mate to produce at least some hybrid offspring.
model draws on the fossil record, where species change most as they arise from an ancestral species and then experience relatively little change for the rest of their existence