Obviously there are many ways different hair types can be worn, combed, braided, cut, etc., but is natural, untouched Black/African decendent or ancestry hair an afro like in the 70s or was that styling? I imagine if it is natural, it’s normally like any hair cut shorter to make it easier to manage so that’s why one might see many lengths?
It's indeed true. African populations have the highest levels of genetic variation among all humans. Studies of these populations are used to understand demographic changes in Africa and to identify disease-related genes (e.g., APOL1).