Thread:YingHe/@comment-36159587-20190328031310/@comment-39025738-20190530113908

Y’all I just searched it up and nobody who I’ve seen has been born with two right hands on their two arms, but I have seen that kids have been born with two or more right or left arms. It’s kinda creepy. Also, did you know that polydactyly(having six fingers) is caused by a DOMINANT ALLELE!?!?!?!!?