
Identify variation
Free printable Grade 6 science worksheet for "Identify variation" — practice heredity. No-prep, print or assign online.
Genetic variation — the differences in traits that exist within and between populations — is examined in this middle school Life Science worksheet, where students practice identifying sources and examples of variation and understanding its role in heredity and evolution. Teachers can use it during a heredity unit to help students connect trait variation to natural selection and adaptation. A clear understanding of variation is foundational to all genetics and evolutionary biology content in high school and beyond.
Learning objectives
- Identify sources of genetic variation within a population
- Explain how variation in traits is passed from parents to offspring
- Connect genetic variation to its role in natural selection and evolution
Answer Key

How to use this worksheet
- Click “Download Worksheet” and sign in with Google or email to get the PDF instantly.
- Print at home or in class for Middle School; it's no-prep, with no extra materials needed.
- Use the included answer key to mark it in seconds.
Frequently asked questions
Is the “Identify variation” worksheet free?
Yes. “Identify variation” is a free printable Science worksheet. Sign in with Google or email to download the PDF instantly.
What grade or age is this Science worksheet for?
It's designed for Middle School (ages 11–14), covering Heredity.
Does it come with an answer key?
Yes — a matching answer key is included so you can grade it in seconds.
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