I read these days many notices about mutations. Ex. a successful surgery some days ago to cut a 2 years girl from her twining without head. Incredible mirror accrete. And today this video... It will be better if I go to sleep now. Otherwise I'll find something more interesting.
Frequency: Around 100 documented cases all around the world.
Cause: It isn´t well known. Some scientists think it is caused by a mutation of the genes that produce the cellular death that were detined to create a tail.
Description: It is observed the presence of a vestigial tail in the final zone of the sacral bone. This tail is compound of conective tissue, muscles, blood vessels, nerves, skin, vertebrae and cartilage. ( source with other anomalies )
