To follow biotechnology as a preferred profession, you must have a sound grounding in science from the early school days. You must have keen interest in various branches of science not just for study sake or for obtaining good grades. Rather, you must have a keen perception to understand scientific applications and even keep pace with the latest news from the scientific world.
Once you are through with 10+2, you must either opt for an undergraduate course in biotechnology or any subject that is directly or indirectly related to biological sciences. Remember a masters degree is a must to make a successful career in the domain of biotechnology.