If you dropped a dead body on Mars, would it start life there?

While it is true that there are anaerobic bacteria living inside the human body, it is inconceivable that these bacteria, which have evolved in symbiosis with the water-rich tissues in terrestrial fauna and flora, would find the dessicated, low pressure, low temperature and high UV environment very favorable. We have terrestrial bacteria, however, that have adapted to many different niches that may find some places on Mars rather homey...such like sub-surface areas near the polar caps.