There is no role of 12th marks,your B.Sc score is 53% is sufficient which meets at least 50% marks for common TET eligibility criteria for the general category but with this you also require teacher training qualification, such as a B.Ed . or D.El.Ed , to apply to TET.

Eligibility for TET is different by state so you need to check your state eligibility too.

If you want to build your career in the teaching field find Upcoming TET EXAM HERE with eligibility criteria.

GOOD LUCK!!

For TET exam, eligibility depends on both your 12th and graduation marks.

If you want to become a Primary Teacher for Class 1 to 5, you need at least 50 percent marks in 12th along with D.El.Ed or B.El.Ed. For reserved category, 45 percent is also accepted in some cases.

If you want to become an Upper Primary Teacher for Class 6 to 8, you need at least 50 percent marks in graduation along with B.Ed. For reserved category, 45 percent in graduation is also accepted.

Since you have 47 percent in 12th, you are not eligible for Primary Teacher TET. But you have 53 percent in B.Sc., so you are eligible for Upper Primary Teacher TET if you have done B.Ed. or are doing it.

For official eligibility details you can check here:

https://ctet.nic.in