They can actually. They don't have to be related in order to have those traits. Some people have the traits of their great-great-great-great Grandma or Grandpa! In my family, I have the facial looks. I can give the looks like my Great Grandma Pearl. I didn'e know my great grandma Pearl but form what I was told she was nice. Off the rabbit trail, we all have traits from someone in our family. Or if your mom persay had you when she wasn't married to your bio dad then you could have traits from his side of the family. You never know who your traits come from. If you want to learn where they come from , I would do a DNA test.
Technically, they can but you don't have to be related because you can have things in common with another person with are personality traits , and if they have different skin colors it doesn't matter , and you can still have many traits in common , because my sister is darker than me a lot but we still share same traits.
