Lecture 10 Flashcards
1
Q
Speciation
A
process where new species arise
2
Q
Allopatric
A
geographic isolation
3
Q
Sympatric
A
no geographic islolation
4
Q
Zygote
A
First diploid cell resulting from fusion of egg and sperm
5
Q
Habitat Isolation
A
Prezygotic
Live in different habitats
6
Q
Temporal Isolation
A
Prezygotic
Breed at different times
7
Q
Behavioral Isolation
A
Prezygotic
Don’t find each other attractive
8
Q
Mechanical isolation
A
Prezygotic
Unable to copulate
9
Q
Gametic Isolation
A
Prezygotic
Sperm cannot fertilize egg
10
Q
Hybrid Inviability or sterility
A
Postzygotic
Non-viable hybrid or viable sterile hybrid
11
Q
Hybrid Breakdown
A
Postzygotic
Hybrids become less viable over generations
12
Q
How does speciation occur?
A
- differences in gene pools between subpopulations become highly different
