In order for a single celled organism to evolve into fish, amphibians, birds, mammals, and eventually, man over millions of years, new body parts have to emerge.
Why haven't we seen a single instance where a new body part has been introduced? (not duplication of body parts)
A Body Part is any part of an organism, such as liver, lungs, stomach, leg, finger, etc.
A new body part is any body part that was introduced to an organism that was not there before, either in the organism itself or the entire population of that particular species.
To my knowledge, I don't know of any instances where this has been observed, either directly or indirectly.
Edited by Forever, : No reason given.
Edited by Forever, : No reason given.