Genes and Traits Introduction

Name:

Date:

DNA double helix and genetic traits illustration

📚 Part 1: Key Terms and Concepts

1. Fill in the blanks with the correct terms: DNA, gene, or trait

a) A _____________ is a characteristic or feature that can be inherited.

b) A _____________ is a unit of heredity found on DNA that influences traits.

c) _____________ is a long molecule that stores genetic instructions.

2. Which of the following best describes the relationship between DNA, genes, and traits?

DNA contains genes, which influence traits

Traits contain DNA, which influences genes

Genes contain traits, which influence DNA

DNA and genes are the same thing

3. Check all examples that are inherited traits:

Eye color in humans

Flower color in roses

A scar from falling off a bike

Fur pattern in cats

A haircut style

Height in corn plants

🔬 Part 2: Traits in Plants and Animals

4. Sort the following traits by writing "P" for plant traits or "A" for animal traits:

_____ Leaf shape

_____ Fur color

_____ Flower size

_____ Beak shape in birds

_____ Stem height

_____ Blood type

5. Which statement about inherited traits is TRUE?

All organisms have exactly the same traits

Traits are passed from parents to offspring through genes

Traits cannot change over time

Only animals have inherited traits

6. Give one example of an inherited trait in plants and one in animals. Explain why each is inherited.

🎨 Part 3: Model Building and Application

7. In the box below, draw a simple model of DNA showing three different gene segments. Label each segment with a different trait (example: eye color, height, hair texture).

8. If you could "swap" one gene segment in your DNA model above, what might happen to the organism's traits? Explain your prediction.

9. Writing Prompt: In your own words, explain what a gene is and how it relates to traits. Use at least three vocabulary words from this lesson in your response.