We also referred to the policy statement of the Government of India filed by the learned Attorney General where 48 the view was expressed categorically by the Government of India that so far as admissions to the institutions of post graduate colleges and such professional colleges are concerned, they should be entirely on the basis of all India merit, subject only to Constitutional reservations in favour of scheduled castes and scheduled tribes However, taking into account broader considerations of equality of opportunity and institutional continuity in education which has its own importance and value, we took the view that though residence requirement within the State should not be a ground for reservation in admissions to post graduate courses, a certain percentage of seats may in the present circumstances, be reserved on the basis of institutional preference "in the sense that a student who has passed M.B.B.S. course from a medical college may be given preference for admission to post graduate course in the same medical college or University but such reservation on the basis of institutional preference should not in any event exceed 50% of the total number of open seats available for admission to the post graduate course.