Let me give you a simple preference list considering good faculty, research prospects, strong curriculum, alumini and training facilities, for Biotechnology

1. Madras Christian College

2. Manipal University Karnataka

3. VIT University

4. PSG Coimbatore

5. SRM University Chennai

6. AMRITA Coimbatore

7. Sathyabama University

For more information about B.Sc. Biotechnology Colleges in Tamil Nadu do follow the link below

https://university.careers360.com/colleges/list-of-bsc-in-biotechnology-degree-colleges-in-tamil-nadu