Lecture 25

Question 1

What are the factos that drive differentiation

Answer 1

Speciation rates and extinction rates

Question 2

Whats the theory behind how rates of speciation can be seperated

Answer 2

Fossil record, molecualr phylogenetic data

Question 3

Whats the pull of present

Answer 3

Lag between speciation and extinction should create apparent uptake because new species have arisen

Question 4

Why do speciation rates vary

Answer 4

Frequency of barriers
The rate at which isolates producing isolating mechanisms
The degree of ecological diversity offering vacant niches

Question 5

How does range size and area affect diversification rates

Answer 5

Species with larger ranges have greater chance of getting split
Larger areas for colonisation produces more oppurtunity for vicariance