Transcript Simulation

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Natural Selection
Simulation
Variation exists within a population
More offspring are born than can
survive
Phenotypic differences result in
differential reproductive success
Individuals that do survive, pass
heritable traits on to offspring
Over time (many generations) this could
lead to changes in the population
Here’s What You Do . . .
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Materials/Procedures
Groups of 3-4
1 Dice
Describe an Environment
Select a creature (real or
imaginary)
Describe 2 phenotypes/explain
differential success
Begin with 15 members of each
PHENOTYPE (30 total)
Use dice; create rules to simulate
differential reproductive success
Surviving babies will reproduce
in the next generation
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Product
1 Poster per group that
includes:
Data Table for at least 8
generations (Generation 1=
15 of each of 2 phenotypes)
Bar Graph representing
each phenotype of each
generation
Illustration of creature and
2 phenotypes
Description of the
environmental stressor
Rules of your simulation
• A couple of things –
• Maybe have each variant have 3/kids and roll to see which has
more survive to reproduce.
• Explain table 1 is a baseline
• Explain that each generation member rolls
• Post lab thought questions – what defined repro
success/differential success.