Occurring in peripatric, parapatric, sympatric, and allopatric varieties, For 10 points, name this process in which reproductive isolation produces a new group of organisms at the lowest taxonomic rank.
One type of this phenomenon is subject to Haldane's rule and ceases via the Wallace effect. In addition to that hybrid type, one type of this phenomenon can be explained by disruptive selection, and this phenomenon can also occur when a population moves into an adjacent or non-adjacent niche or when a geographical barrier completely splits and separates a population. Occurring in peripatric, parapatric, sympatric, and allopatric varieties, For 10 points, name this process in which reproductive isolation produces a new group of organisms at the lowest taxonomic rank.
One type of this phenomenon is subject to Haldane's rule and ceases via the Wallace effect.
Speciation [accept Hybridization before "hybrid"]