MT: Evolution Speciation and Reproductive Isolation Creating a New Species MT: Evolution Speciation and Reproductive Isolation

What is Speciation? Creating a new species

How Speciation Occurs When a group in a population are separated and can no longer reproduce a new species is formed

Ways to create a new species Reproductive Isolation Geographical Isolation Temporal Isolation Behavioral Isolation Populations separated by geographical barriers like water, canyons, and mountains Populations separated by time like nocturnal, diurnal, months, years Populations separated by behaviors like mating calls, physical traits, mating dances

Geographic Isolation No mating because one species gets separated by a barrier. Over time, can lead to two different species.

Behavioral Isolation No mating because one does not desire the courtship behavior of the other one. Over time, can lead to two different species

Temporal Isolation No mating because one reproduces at different times of day, month, year. Over time, can lead to two different species.

Critical Questions: How does reproductive isolation affect speciation? How does geographic isolation affect speciation?