Why do some people have curly hair and others straight?

Why do some people have curly hair and others straight?

Curly or straight hair is determined by genetics. The shape of the hair follicle affects the texture: round follicles produce straight hair, while oval or asymmetrical follicles create curly hair. Additionally, variations in the keratin protein and other genetic factors influence hair texture.

Why It Matters

This fact belongs to the general category and contributes to expanding general knowledge. Understanding such facts not only makes you smarter but also helps connect ideas across different fields.

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