Body Parts: Double-Jointedness, Hitchhiker’s Thumb, and More
Traits Every child looks and acts different Some yell and run Others swing or dig you look different from your friends on the playground
What make people different are their traits Hair color is a trait Skin color is a trait too People have many different traits you and your friends have different traits
Our bodies have directions for our traits These directions are called genes Genes tell the body how to work and grow This picture shows what a section of a gene looks like Genes are too small to see
Your genes make you different from other people You got your genes from your birth parents Birth parents are related to their kids Adoptive parents take a child into their family and become the child's parents
