1. October 23, 2014 Objective: To look at evidence for evolution and arrange organisms in to cladograms based on common characteristics Journal: What are three examples of evidence for evolution?

2. Cladistics

3. Cladistics is classification based on common ancestry.
Phylogeny is the evolutionary history for a group of species.
Supported by evidence from living species, fossil record, and DNA
Shown with branching tree diagrams

4. Species placed in order that they descended from a common ancestor

5. Clade: is a group of species that shares a common ancestor.
Each species in a clade shares some traits with the ancestor.
Each species in a clade has traits that have changed.

6. Derived characteristics are traits shared by clade members
FOUR LIMBS WITH DIGITS
Tetrapoda clade 1
Amniota clade 2
Reptilia clade 3
Diapsida clade 4
Archosauria clade 5
EMBRYO PROTECTED BY AMNIOTIC FLUID
OPENING IN THE SIDE OF THE SKULL
SKULL OPENINGS IN FRONT OF THE EYE & IN THE JAW
FEATHERS & TOOTHLESS BEAKS.
SKULL OPENINGS BEHIND THE EYE
DERIVED CHARACTER
Determine how species are arranged on a cladogram
More closely related species share more derived characteristics
Represented on cladogram as hash marks

7. Nodes represent the most recent common ancestor of a clade.
FOUR LIMBS WITH DIGITS
Tetrapoda clade 1
Amniota clade 2
Reptilia clade 3
Archosauria clade 5
EMBRYO PROTECTED BY AMNIOTIC FLUID
OPENING IN THE SIDE OF THE SKULL
SKULL OPENINGS IN FRONT OF THE EYE AND IN THE JAW
FEATHERS AND TOOTHLESS BEAKS.
SKULL OPENINGS BEHIND THE EYE
NODE
DERIVED CHARACTER
CLADE
Diapsida clade 4

8. How to make a Cladogram Video: