Classify genes
Free printable Grade 6 science worksheet for "Classify genes" — practice heredity. No-prep, print or assign online.
Middle school Life Science students classify genes in this Heredity worksheet, exploring the distinction between dominant and recessive alleles and how genes are expressed as traits. Teachers can use it as a structured introduction before students work with Punnett squares, or as a vocabulary-building review that prepares them to analyze inheritance patterns. A clear understanding of gene classification underpins all work on heredity and genetic variation.
Learning objectives
- Classify genes as dominant or recessive and explain the difference
- Describe how dominant and recessive alleles interact to determine an organism's traits
- Use gene classification vocabulary accurately in explanations of heredity
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 “Classify genes” worksheet free?
Yes. “Classify genes” 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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