Mistake Master
Student view — seeing the site as a student does
Mistake Master · AP Biology · Unit 7 · Step-Through Animation

The Population That Was Doing Fine

You'll learnwhy genetic variation sets a population's capacity to survive a changing environment.

A population with almost no genetic variation can look like the healthiest thing on the island — right up until the day the island changes. We will run the model, and the naive average will say the uniform population is winning. It is extinct by episode 3. Twelve short steps; press Next for each one.

AP BIOLOGY · 12 STEPS · 6 QUICK CHECKS · 12 INDIVIDUALS · 3 VARIANTS · 3 ENVIRONMENTS · SEEDED RUN · v5

12 individuals · 3 variants · 3 environments
Before you start
What you're looking at
Twelve individuals in a meadow, each carrying one of three variants — thick coat, heat tolerance, or disease resistance — with a key.
The question
Which variant is the best one — and does that question even have an answer?
Step 1 / 12