Prosecution Stands With Defense For Verdict In Reboot

the reboot of the original has been going on a few years now and one thing I've never understood or got an answer for is why does the prosecution stand with the defense for the verdict?...only the defense stood in the original run...did something change in the law since the original went off the air in 2010?....or something different in NYC specifically?....and is the prosecution standing with the defense normal in most parts of the country?....and in different levels of the judiciary, local/state/federal?...thanks