Prezygotic isolating mechanism that occurs
when species mate or flower at different seasons or at different
times of the day. Also known as Seasonal
Isolation.
A period of time lasting from 65 million to 2
million years ago in the earth's history.
A genetically determined characteristic or
condition.
Refers to the cumulative changes over time
whereby one gene pool changes into another that is presumably
reproductively isolated from the first.
Movement of a chromosomal segement from one
location to another.
A period of time lasting from 245 million to
208 million years ago in the earth's history. This period is marked
by the emergence of the dinosaurs.