Active Directory requires Microsoft DNS?

Presently our organization utilizes BIND for DNS services, with the Networking team administering. We are now being told by the Systems team that they will be responsible for DNS services and that it will be changed over to the Microsoft DNS service run on domain controllers. The reason given is that the Active Directory implementation requires the Microsoft DNS service and dynamic DNS. Not being a Microsoft administrator I do not know the veracity of these claims. Anyone out there had any experiences with a situation like this? I am a bit leery of changing something that is already working.