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

Overview

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!

Learn about the physical features you inherit in the What Traits Are in Your Genes? Series-part of the Lightning Bolt Books™ collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books™ bring nonfiction topics to...

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Overview

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!

Learn about the physical features you inherit in the What Traits Are in Your Genes? Series-part of the Lightning Bolt Books™ collection. With high-energy designs, exciting photos, and fun text, Lightning Bolt Books™ bring nonfiction topics to life!

What Traits Are In Your Genes? Body Parts: Double-Jointedness, Hitchhiker's Thumb, and More

Eye Color: Brown, Blue, Green, and Other Hues Facial Features: Freckles, Earlobes, Noses, and More

Hair Traits: Color, Texture, and More

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

Vision: Nearsightedness, Farsightedness, and More

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Editorial Reviews

Children's Literature - Cathi I. White
Just as people have different eyes, noses, hair color, and ears, they have other body parts that can be distinctive as well. Some people's joints are very flexible. They are able to bend their fingers a certain way or bend their legs or arms in unusual positions. These people are double-jointed, but not everyone has this special trait. Double-jointedness is inherited from the genes from parents. The alleles in genes are an important part of what is passed from parent to child in order to inherit a certain trait. Another special feature is how a thumb is shaped. Some thumbs are straight while others are curved. A hitchhiker's thumb is one that is curved at the end, often associated with the way someone's thumb looks when they are hitchhiking. In addition, how a person holds their hands together is an individualized trait. Even how the pinkie finger grows, whether straight or bent, is an inherited trait. Readers will learn about some interesting traits that they could have. Children will enjoy the easy-to-read material while looking at the photos that enhance the information. There are activity pages in the back for children to complete with their classmates to increase their knowledge. Furthermore, there is a glossary for better understanding key vocabulary words and a section for further reading, which includes websites, to help the children learn more about genes and traits. This informational book is part of the "Lightning Bolt Book" series "What Traits Are in Your Genes?" This enlightening book would be excellent for the classroom. Reviewer: Cathi I. White
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Product Details

Table of Contents

Traits 4

Double-Jointed Fingers 10

All Thumbs! 16

Hands and Pinkies 20

Activity 28

Glossary 30

Further Reading 31

Index 32

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