elstaffe’s Reviews > The Hyena Scientist: A Scientists in the Field Book About Groundbreaking Female Research and Misunderstood Mammals for Kids > Status Update

"One reason is surely that sons who stay with their mothers, sisters, and aunts would have nobody to mate with other than family—and inbreeding creates genetic disasters. (Human royalty who unwisely failed to avoid this problem produced offspring like Mad King Ludwig Il of Bavaria, Juana the Mad of Castile, Charles the Mad of France ... you get the idea.)" (46)