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We just got done learning about speciation. This process is also referred to as evolution.
For decades, scientists looked at the fossil record and could tell that life had changed, but no one knew how.
Charles Darwin was the first one to use the phrase natural selection.
The fossil record includes things like bones, teeth, skeletons, footprints, preserved leaves, and anything else that shows us what organisms looked like or how they behaved in the past.
To help you understand natural selection, read through this comic.
Practice:
Practice:
You will now practice these principles using a simulation. Pick one of the two simulations below.
To summarize:
Natural selection is when traits that help an organism survive are passed down through the generations (if you die, you can't pass on your genes). These traits come through random mutations.
In order for an adaptation (or a favorable trait) to become more common, it has to exist in the population and be an advantage in the environment.
Checkpoint 3:
Checkpoint 3:
Answer these questions about the simulation you completed:
What happened to the organisms not suited for their environment?
Was there a pattern between the color of the organism and how well they survived?
What are the limitations of the simulation?
What are the strengths of the simulation?
What would you modify if you could redo the simulation?
Explain how natural selection and adaptations work in terms of an organism's survival. Use the simulation you did to guide your answer.
Submit all answers on a Google Doc to Slate.
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