Not only do I, a female have 3 colours of hair, my youngest son does, also. I just figured it is some sort of genetic family trait. He has blond, red & black, and being as I am nearing my 70's , I have white , black & red....the white use to be blond. Mine is in patches on my head, & his is in patches in his beard & mustache...so he shaves his beard & mustache off....and his head now, too. He started out as a tow head, almost white hair as a baby, then when he turned 9 or 10, his hair started coming in black, (my father had the same thing happen, but was not calico....my Mom has red hair when she was young). Genetics are weird :-)!!!
Calico Humans
Not only do I, a female have 3 colours of hair, my youngest son does, also. I just figured it is some sort of genetic family trait. He has blond, red & black, and being as I am nearing my 70's , I have white , black & red....the white use to be blond. Mine is in patches on my head, & his is in patches in his beard & mustache...so he shaves his beard & mustache off....and his head now, too. He started out as a tow head, almost white hair as a baby, then when he turned 9 or 10, his hair started coming in black, (my father had the same thing happen, but was not calico....my Mom has red hair when she was young). Genetics are weird :-)!!!