Warm Up: Dachshunds are selectively bred
to fit into badger holes. What do you think is
the difference between selective breeding
and natural selection?
Evolution vs. Selective Breeding
Evolution is the gradual change of
species over time. Natural selection
and “survival of the fittest” control
evolution. People trying to create a
particular set of traits control selective
breeding.
• Natural selection: process where
individuals that are better adapted to their
environment survive and reproduce
longer.
• Survival of the fittest – organisms with the
best adaptations live longer so reproduce
more.
• Bacteria change and antibiotics may not
work! – antibiotic resistant.
Venn Diagram
•
Video clip 15 min natural selection
• While watching the video (12 min)
Compare natural selection to selective
breeding (aka artificial selection)
6 or
more
facts
total
Natural selection
Selective Breeding aka
artificial selection
Natural Selection
Selective Breeding
Natural Selection
Moths,
whales
Selective Breeding
Evolution,
antibiotic resistant
mutations
bacteria - strep
of DNA
Survival of the fittest
Dogs,
Corn, rice
tomatoes,
$ motivation
Video Clip Notes
Jeff Corwin
http://learn.genetics.utah.edu/content/variation/