welcome to class define the patterns of evolution
Post on 18-Jan-2016
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Welcome to Class
Define the patterns of evolution.
Agenda
• Phylogenetic tree notes• Why Evolution matters video • Review
Phylogenetic Tree
What is a Phylogenetic Tree?
• A branching diagram showing evolutionary relationships among species based on similarities and differences in physical and/or genetic characteristics
Uses of Phylogenetic Trees
• Organize knowledge of biological diversity, • Structure classifications, • Providing insight into events that occurred
during evolution. • Trees show descent from a common ancestor
This tree shows that gibbons diverged before other primate groups.
Chimps and humans diverged last.
SpeciesNumber of differences from
human cytochrome c
Monkey 1
Rabbit 4
Horse 6
Chicken 7
Frog 8
Turtle 8
Tuna 13
Shark 14
Why does evolution matter now?
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