As we’ve been reminded by the new Game of Thrones spin-off, Westeros and incest go together like brother and sister. That being the case, it probably doesn’t qualify as a spoiler to reveal that ...

ORLANDO, Fla. — Kissing cousins aren’t doing their children any evolutionary favors, some preliminary data suggest. Mating with a close relative, known as inbreeding, reduces nonhuman animals’ ...

The idea of blue-skinned people may seem relegated to Smurf Village and other fictional places; however, one rural Kentucky family actually sported sapphire skin due to a rare condition sparked by ...

Signs of Inbreeding Among SoCal Mountain Lions Raise Extinction Fears Researchers have long had genetic evidence of inbreeding, but the malformed sperm is the first evidence that inbreeding is ...

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Inbreeding depression is a major selective force favoring outcrossing in flowering plants. Some self-fertilization, however, should weaken the harmful effects of inbreeding by exposing genetic load to ...

Dr. Horowitz is a cognitive scientist who studies dogs. Sex with your sibling is called incest and is illegal in almost all 50 states. Sex with your sibling or other close relations, if you are a dog, ...