Assignment 19: Speciation and Reproductive Isolation. What is a species? How do new species originate?. Tutorial. Please take your assigned seat so that I can take attendance. Take out any assignments that you need to work on.
What is a species?
How do new species originate?
Please take out your:
-Islands Presentation Notes
-Genetic Drift Lab
A species is a group of individuals that can reproduce viable offspring.
Speciation is the process where individuals are reproductively isolated from one another. Over time, their DNA mutates. The new populations are no longer able to reproduce with one another.
When individuals of a particular species are unable to mate due to behavior, temporal, or geographic barriers.
A geographic barrier divides a population of organisms.
Ex. The Kaibab and Albert Squirrels of the Grand Canyon
When a group of organisms mates at different times.
Ex. Trees produce flowers at different times
Two groups of organisms have different mating rituals.