Download Sc9 - a 1.3 (teacher notes)

Learning outcomes:
1 I can explain the role variation plays in survival.
2 I can identify examples of natural selection.
3 I can describe examples of variation among species and within species.
1.3 – Variation Within Species
Variability = Variation/diversity within a population, of a single
species.
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Variability is important and necessary if the environment, in
which the species lives, changes (suddenly or drastically).

When a species has a great deal of variation, then, some of the
individuals within that species will likely survive when there is
change.
Examples of variability include:
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Red fox (color of coat)
Antibiotic resistance (bacteria)
Banded snail (color of shell)
Natural selection happens when factors in the environment
determines, or 'selects' which individuals, within a species, will be able
to survive. Video on Natural Selection http://www.youtube.com/watch?v=aTftyFboC_M

If they are able to live long enough to reproduce, then those
individuals with their 'survival adaptations (characteristics) will
have offspring with similar survival characteristics
o Finish this latest activity.
o Lab : Protective Coloration and Survival
o Then Small quiz on Unit A Section 1.1 – 1.3