FACTS ABOUT SIBLING REVEALED

Three-quarter siblings share 1 dad or mum, when the unshared mother and father are first-diploma kinfolk to each other, as an example, if a man has kids with two women that are sisters, or a girl has small children by using a man and his son. In the 1st case, the kids are 50 %-siblings and also first cousins; in the 2nd, the kids are fifty percent-