Transcript 5.5 Salamander Activity LY

Evolution

Catalyst
 Describe
(in your own words!) what occurs during
natural selection.
 How is natural selection related to microevolution?
 Describe in your own words how new species evolve.
(Hint: If you’re having trouble, start with how a
population could separate from the rest.)
Write in complete sentences!
Don’t talk during the Catalyst!
Objectives
By the end of today, all SWBAT…
 Explain the relationship between natural
selection and speciation through a case
study
 Ace the quiz!
Agenda


Catalyst Review
Salamander Lab
 Directions/Expectations
 Data
Analysis
 Discussion Questions


Quiz
Exit Question
Directions




On your grid map of California, plot the points of
each salamander
After finishing the plot, look for a pattern in the
coloration. Do you notice any trends in the
salamanders on the coast vs. the ones in the
mainland?
Cross-reference to the topographical map of
California to look at altitude
Answer discussion questions individually.
OH SNAP IT REALLY DID HAPPEN

http://www.pbs.org/wgbh/nova/beta/evolution/e
volution-action-salamanders.html
Quiz!

Put away your binders…
Turn
your desks into rows…
And
let’s ace that quiz!
You have 15 minutes
Exit Question

Using the California salamanders as an
example, explain…
How
one species of organism could
speciate into two
Why reproductive isolation is necessary
for speciation