Heritability and Evolution of Traits is a Grade 6 Science worksheet on biodiversity that examines how genetic and environmental influences contribute to variation in traits. Students define heritability, distinguish genetic differences from environmental influences, and connect heritable variation to natural selection and changes in allele frequencies over generations.

🧬 Explore Trait Variation and Evolution

The resource gives students a focused way to examine why individuals within a population can differ and how those differences can influence evolutionary change. Students work with the idea that heritability describes the proportion of variation in a trait caused by genetic differences, while also considering environmental influences on observed traits.

Students then connect heritable traits to natural selection, explaining how selective pressures can lead to changes in allele frequencies across generations. Trait distribution data provides an opportunity to infer how selective pressures may be acting on populations and to support conclusions using evidence from the information presented.

📝 Student Practice

Question types include multiple-choice questions, true-or-false questions, short-answer questions, a reading passage, matching, a cloze passage, an essay, and a Did You Know feature. The range of tasks allows students to work with definitions, distinguish genetic and environmental influences, explain evolutionary processes, and interpret trait distribution data.

📦 Included for Students and Teachers

• ✅ Student worksheet focused on heritability, trait variation, natural selection, and allele frequency changes
• ✅ Separate PDF answer key for reviewing student responses
• ✅ Student Notes & Lesson Summary supplement for reinforcing the key concepts
• ✅ Separate PDF Teacher Guide with learning objectives, teaching tips, discussion questions, and common mistakes

🏫 Practical Classroom Use

Use this Grade 6 biodiversity activity for guided instruction, independent science practice, lesson review, or assessment. The teacher guide supports classroom discussion around common misconceptions, while the student notes provide an additional reference for the core concepts.

This Ontario Science resource is especially useful when students need to connect trait variation, heredity, natural selection, and evolutionary change rather than studying each concept in isolation. By asking students to interpret trait distribution data and reason about selective pressures, the worksheet brings evidence-based thinking into the study of biodiversity.