Macroevolution - PowerPoint PPT Presentation

Loading...

PPT – Macroevolution PowerPoint presentation | free to view - id: 1e432a-ZDc1Z



Loading


The Adobe Flash plugin is needed to view this content

Get the plugin now

View by Category
About This Presentation
Title:

Macroevolution

Description:

Macroevolution – PowerPoint PPT presentation

Number of Views:53
Avg rating:3.0/5.0
Slides: 36
Provided by: nolan3
Category:

less

Write a Comment
User Comments (0)
Transcript and Presenter's Notes

Title: Macroevolution


1
Macroevolution
Speciation, Extinction, Adaptive radiations, Key
innovations
2
Why are some clades more diverse?
3
Why are some clades more diverse?
  • Rate of speciation
  • Rate of species extinction
  • What affects these processes?

4
(No Transcript)
5
(No Transcript)
6
(No Transcript)
7
(No Transcript)
8
(No Transcript)
9
Hodges and Arnold 1995
  • Spurring plant diversification are floral
    nectar spurs a key innovation?
  • Evidence for nectar spurs as key innovations
  • Correlation with diversification rate in multiple
    clades
  • Rapid evolution of diverse morphologies

10
(No Transcript)
11
(No Transcript)
12
(No Transcript)
13
(No Transcript)
14
(No Transcript)
15
(No Transcript)
16
(No Transcript)
17
Hodges and Arnold 1995
  • Evidence for nectar spurs as key innovations
  • Correlation with diversification rate in multiple
    clades
  • Rapid evolution of diverse morphologies
  • Affect type of pollinator, influence reproductive
    isolation

18
Angraecum sesquipedale
19
Angraecum sesquipedale
Xanthopan morganii
20
(No Transcript)
21
Hodges and Arnold 1995
  • Evidence for nectar spurs as key innovations
  • Correlation with diversification rate in multiple
    clades
  • Affect type of pollinator, influence reproductive
    isolation
  • ML model indicates trait is associated with
    diversification rate

22
Hodges Arnold 1995
23
Hodges and Arnold 1995
  • Evidence for nectar spurs as key innovations
  • Correlation with diversification rate in multiple
    clades
  • Affect type of pollinator, influence reproductive
    isolation
  • ML model indicates trait is associated with
    diversification rate
  • Criticisms
  • Correlation vs. causation
  • Change in speciation or extinction rate?

24
Macroevolutionary trends in flowering plants
25
(No Transcript)
26
(No Transcript)
27
(No Transcript)
28
(No Transcript)
29
(No Transcript)
30
(No Transcript)
31
(No Transcript)
32
(No Transcript)
33
(No Transcript)
34
(No Transcript)
35
(No Transcript)
About PowerShow.com