Say: KRO-muh-soamz
Your body is made up of billions of cells, which are too small to see without a strong microscope. Inside most of those cells are chromosomes, which are thread-like strands that contain hundreds, or even thousands, of genes. Genes determine physical traits, such as the color of your eyes. Most people have 23 pairs of chromosomes — half from their mother and the other half from their father. Even after you're born, your 46 chromosomes continue to guide the way your body grows and develops.
Note: All information is for educational purposes only. For specific medical advice, diagnoses, and treatment, consult your doctor.
© 1995- The Nemours Foundation. KidsHealth® is a registered trademark of The Nemours Foundation. All rights reserved.
Images sourced by The Nemours Foundation and Getty Images.
New UsersCreate a User AccountBecome a Member |
Forgot PasswordForgot your password? Click here |