Transgenic Bacteria and Genetic Engineering — NEET Biology
📚 Practice ConceptWhat are transgenic bacteria? Illustrate using any one example.
Assertion (A): PCR can detect very low concentrations of pathogens in samples. Reason (R): PCR directly detects pathogen proteins using specific antibodies.
View solution & NCERT explanation
Correct answer: C — If assertion is true but reason is false.
NCERT confirms PCR can detect low pathogen concentrations: “Very low concentration of a bacteria or virus can be detected by amplification of their nucleic acid by PCR.” However, NCERT states PCR works by “amplification of their nucleic acid” - PCR detects nucleic acids (DNA/RNA), not proteins. The Reason confuses PCR with immunological detection methods like ELISA.
What does NCERT say about What are transgenic bacteria?
Has this concept appeared in NEET?
Which chapter is this from?
Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.
176/180MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.