There is created in and for each municipal corporation in this state a public body corporate and politic to be known as the downtown development authority of such municipal corporation, which shall consist of a board of seven directors. The governing body of the municipal corporation shall appoint two members of the first board of directors for a term of two years each, two for a term of four years each, and three for a term of six years each. The governing body of the municipal corporation may appoint one of its elected members as a member of the downtown development authority. After expiration of the initial terms, except for the director who is also a member of the governing body of the municipal corporation, the terms of all directors shall be six years; provided, however, that the terms shall be four years for those directors appointed or reappointed on or after July 1, 1994. The term of a director who is also a member of the governing body of a municipal corporation shall end when such director is no longer a member of the governing body of the municipal corporation. If at the end of any term of office of any director a successor to such director has not been elected, the director whose term of office has expired shall continue to hold office until a successor is elected. A majority of the board of directors shall constitute a quorum.