Hair is like a rope made of tiny strings called keratin. If the strings are twisted, your hair looks wavy or curly, like a rope that's been coiled up. If they're straight, your hair looks smooth and straight. This happens because of special instructions in our cells, passed down from our parents.
Examples
- A boy has straight hair because his dad's hair is also straight.
- Hair can look different even if people are siblings.
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See also
- Why Do Some People Have Naturally Curly Hair?
- Why Do Some People Have Naturally Curly Hair?
- Why Do Some People Have Curly Hair and Others Have Straight Hair?
- How are fingerprints formed?
- How does AI assist in the discovery of genetic diseases?