"You would know all about that, wouldn’t you?" She snapped back. "Centuries of inbreeding have to have some effect. Muggles usually get haemophilia but I guess for people like you it’s a higher risk of producing squibs and having volatile magic." Hermione’s eyes wandered over his face and her lips twitched into a small smirk. "Instead of the Habsburg jaw, you seem to suffer from an uncanny resemblance to rodents. Do you get it from your mother’s or your father’s side?"