A rare genetic anomaly, called Polycephaly, causes animals to be born with more than one head! A polycephalic organism may be thought of as one being with a supernumerary (additional) body part, or as two, or more, beings with a shared body.
Two-headed animals (called bicephalic or dicephalic) and three-headed animals (tricephalic) are the only type of multi-headed creatures seen in the real world. This congenital condition forms by the same process as conjoined twins, from monozygotic twin embryos.
No comments:
Post a Comment