How is it possible that some Caucasian people have very curly hair

Is it common for Native Americans/indigenous Aboriginal Canadians to have naturally curly hair? - Quora

Why do Irish People have curly hair? - Quora

What race or ethnicity does curly hair come from? - Quora

Why do most Arabs have curly hair? - Quora

Is curly hair considered an African hair or a Middle Eastern hair? - Quora

Which race/ethnicities tend to have certain hair textures (curly, straight, wavy hair)? - Quora

Why do black people have curly hair? - Quora

Why do white men like girls with curly hair? - Quora

Are white people with naturally curly hair part African? - Quora

Can white people have curly hair naturally? - Quora

Can a white person have extremely curly hair? (as shown on the pic) Is it a sign they might have had an African ancestor in the past? - Quora

Why do Polynesians have curly hair? - Quora

How is it possible that some Caucasian people have very curly hair? - Quora

What race or ethnicity does curly hair come from? - Quora

Are red, curly headed people rare? - Quora