posted on May, 25 2005 @ 11:24 AM
This is actually not all that uncommon. Many people start off as twins, and one 'person' absorbs the other, reducing its development.
Indeed, there is a kind of twinning and absorption where the 'other' is broken up and intergrated into one of the twins, ie rather than residing
parasitically as a clump, its dispersed throughout the body, its cells intermixed, and grows together as a single person.