NISER - National Institute of Science Education and Research

VIT has better placements than NISER or IISER but if you are interested in research than go for IISER.

Can you please tell me the course name that you have completed from NISER, so that I can guide you better?

Please refer to the link provided below for details regarding a course in Integrated B.Sc. + M.Sc from National Institute of Science Education and Research. You should be able to download college brochure which contains important details regarding admissions from National Institute of Science Education and Research for Integrated B.Sc + M.Sc. Regards.
https://www.shiksha.com/science/course/integrated-b-sc-m-sc-national-institute-of-science-education-and-research-bhubaneswar-25017

If you pursue in genetics, then you go for biotechnology, it has everything.

You need to appear for NEST (National Entrance Screening Test) to get into NISER, follow the official link below for details:
https://www.nestexam.in/
For IISER: https://www.shiksha.com/science/exams/iiser-entrance-exam