There is a small village in a mountain valley in spain where a largenumber of people are polydactyl (have more than fivefingers or toes)why does this trait tend to be passed on from generation to generation? pleassse hep

The answer would be abrasion.

Ifound this information on google “yes. they have a mouth and brain at one end and an anus at the opposite end. what characteristics distinguish an annelid from other worms? annelids have segmented bodies and a coelem which is a tube filled with fluid and contains most of the organs.“ i hope it you