Talk:Mahiru Kasumi/@comment-28418883-20160617142455/@comment-26426093-20160618061849

@Soruna Not all siblings have the same physical attributes: I'm not a expert on biology but I remember that the main reason for different hair colours between siblings depend on the hereditary hair colour of their parents. Also, there's a sort of pigment called eumelanin that determines the shade and colour of hair; if you have dark hair, then it's most likely that your hair contains lots of it, and vice versa for those who have blonde/lighter hair.