Hi Candidate,

Yes! It is possible to re-admit class 12th board with pcb background. But be sured enough, as you will loose those efforts of having PCM in class 11th and 12th. You need take readmission in class 11th with PCB background and have to formally complete the syllabus and exams as normal students do.

However, I suggest you to start from 11th class if you have completely changed your mind and build career in biology.

But you can also join NIOS or any school that offer direct admission in class 12th, but you will face difficulty in your board exams as basics would not be cleared.

I hope it helps.

Thank you!