Hello student.

all students who had either PCB or PCM in 10+2 are eligible for B. Tech programs in Biotechnology or any other course

Don't worry both groups will have basic courses in Biology and Mathematics during their first years in B. Tech courses. This will help you clear your basics in the first year itself.

More specialized courses will be taught from the second years onwards,and that does not requires your so much knowledge of class 11 and 12,as biology can be applied in most of the engineering streams like biochemistry,biophysics,etc.

Hope this helps you!

Regards