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Step into an infinite world of stories

Listen and read

Jennifer Boothroyd

Do you see clearly? Or do faraway objects look blurry to you? Maybe objects in the distance look clear, but you have trouble reading close-up print. What determines how your vision works? Read this book to find out about how your genes affect your physical features.

Intuitive

Lerner

Lightning Bolt Books ® — What Traits Are in Your Genes?

Vision: Nearsightedness, Farsightedness, and More

What color are your eyes? Brown is the most common color. But some people have blue, green, gray, hazel, or amber eyes. What determines your eye color? Read this book to find out about how your genes affect your physical features.

Eye Color: Brown, Blue, Green, and Other Hues

Buffy Silverman

Can you stretch your thumb back to your arm? Is your pinkie straight or slightly bent? What determines the way your joints bend—or don't bend? Read this book to find out about how your genes affect your physical features.

Body Parts: Double-Jointedness, Hitchhiker’s Thumb, and More

What facial features do you have? Freckles are a common feature. So are turned-up noses and unattached earlobes. What determines your facial features? Read this book to find out about how your genes affect your physical features.

Facial Features: Freckles, Earlobes, Noses, and More

Can you roll your tongue into a U-shape? Some people can. But other people's tongues stay flat. What determines whether you can roll your tongue?

Unusual Traits: Tongue Rolling, Special Taste Sensors, and More

What color is your hair? Human hair color ranges from white and light blond to black. Red is the least common hair color. What determines the color and texture of your hair? Read this book to find out about how your genes affect your physical features.

Lightning Bolt Books ® — What Traits Are in Your Genes? - The book series

Lightning Bolt Books ® — What Traits Are in Your Genes? - The book series

Lightning Bolt Books ® — What Traits Are in Your Genes? books in order

Listen and read