Class 12 · Biology
Molecular Basis of Inheritance
NEET questions.
Build recall through active solving with original NEET-style MCQs, worked explanations and chapter-level NCERT provenance.
250 verified questions · NCERT chapter mapped · automatic error log
BiologyPlate 39
NeetVellum atlas · fig. biology
39
Question preview
Three examples from the live 250-question bank. Answers appear after attempting them in practice mode.
Example 1 · difficulty 2/5
In the bacteriophage infection experiment of Hershey and Chase, radioactivity was detected in the pellet after blending and centrifugation when the phages were labelled with ³²P. This observation indicated that
- A. ³⁵S-labelled protein had entered the bacterial cells
- B. ³²P-labelled DNA had entered the bacterial cells
- C. ³²P specifically labels the protein coat of the phage
- D. ³⁵S had become trapped inside the bacterial cell wall
Example 2 · difficulty 1/5
A double-stranded DNA fragment contains 600 adenine bases out of a total of 2000 nitrogen bases. Applying Chargaff's rule, the number of guanine bases in this fragment is
- A. 200
- B. 400
- C. 600
- D. 800
Example 3 · difficulty 3/5
During replication in E. coli, the two antiparallel strands of the parental duplex are copied differently. The lagging strand is synthesised discontinuously as short Okazaki fragments primarily because
- A. helicase unwinds the duplex only ahead of the leading strand
- B. DNA ligase can seal nicks only between leading-strand segments
- C. RNA primers are synthesised exclusively on the lagging strand
- D. DNA-dependent DNA polymerase catalyses polymerisation only in the 5'→3' direction
The chapter mastery loop
- 1. Attempt firstExpose recall gaps before rereading.
- 2. Classify the missConcept, careless, rushed or guessed.
- 3. Re-practiceReturn until the error pattern disappears.
Frequently asked questions
How many Molecular Basis of Inheritance NEET questions are available?
NeetVellum publishes 250 verified questions for this chapter. Free accounts use the daily UG quota; UG Pro removes it.
How should I revise Molecular Basis of Inheritance for NEET?
Attempt questions before rereading, classify each miss, revisit the exposed NCERT concept, then re-practice until the error pattern disappears.