Hello Rohit,
You can do B.Tech after B.Sc through lateral entry.The eligibility criteria for lateral entry is to complete diploma in engineering or a B.Sc course .Through lateral entry you can get direct admission to third semester of the engineering course.
It is important to have Mathematics as one of the subjects in your B.Sc course for lateral entry.But for B.Tech in Biotechnology , B.Sc with medical is required.You should also have completed your graduation with a minimum of 55% marks.
Hope this helps!!
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