Australian platypus research has implications for understanding the evolution of human being sex determination The mystery surrounding sex perseverance of the initial Australian platypus has yielded a amazing secret: it has 10 sex chromosomes www.eriacta.org/side-effects.html . The tagged DNA homes in on sequences which are the same . DNA isolated in one of the Y chromosomes by fellow researcher, Dr Enkhjargal Tsend-Ayush, demonstrated that it had been specific to men. In the man platypus, the ten sex chromosomes fall into line as a chain of XYXYXYXYXY at meiosis, the special cell division that distributes chromosomes to sperm and eggs.