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Molecular basis of inheritance (class 12th Biology) Revision Test | MCQs For NEET

Diksha Bhatla May 8, 20225.2k views 25 Questions 5 Attempts
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Q1. Which of the following statements is the most appropriate for sickle cell anaemia ?
Q2. The first genetic material could be
Q3. The human chromosome with the highest and least number of genes in them are respectively
Q4. Who amongst the following scientist had no contribution in the development of the double helix model for the structure of DN A ?
Q5. Which of the following steps in transcription is catalysed by RNA polymerase ?
Q6. Control of gene expression takes place at the level of
Q7. Which was the last human chromosome to be completely sequenced ?
Q8. In some viruses, DNA is synthesised by using RNA as template. Such a DNA is called
Q9. If the sequence of initrogen bases of the coding strand of DNA in a transcription unit is: 5’ – ATGAATG – 3’, the sequence of bases in its RNA transcript would be
Q10. The RNA polymerase holocnzyme transcribes
Q11. If the base sequence of a codon in mRNA is 5’ – AUG – 3′ the sequence of tRNA pairing with it must be
Q12. The amino acid attaches to the tRNA at its
Q13. To initiate translation, the wiRNA first bind to
Q14. In E. colt, the lac operon gets switched on when
Q15. In DNA strand, the nucleotides are linked together by
Q16. If a double stranded DNA has 20% of cytosine, what will be the percentage of adenine in it ?
Q17. If the sequence of bases in one strand of DNA is ATGCATGCA, what would be the sequence of bases on complementary strand ?
Q18. How far is each base pair from the next one in DNA double helix model ?
Q19. Synthesis of DNA from RNA is explained by
Q20. Histone proteins are
Q21. The structure in chromatin seen as ‘beads-on string’ when viewed under electron microscope are called
Q22. Find out the wrong statement about heterochromatin,
Q23. They year 2003 was celebrated as the 50th anniversary of discovery of
Q24. Amino acids which are specified by single codons are
Q25. Which out of the following statements is incorrect ?

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This practice test includes 25 important multiple-choice questions (MCQs) from the chapter – Molecular basis of inheritance (Class 12th Biology). attempt this test and revise this chapter to be fully prepared for the upcoming exam. these questions will be helpful for upcoming NEET, Aiims, and other entrance level exams.

Written & Verified by Diksha Bhatla

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Diksha Bhatla is a Pharmacy graduate and a passionate academic content creator currently pursuing higher studies in Pharmacy. She contributes to SoloTutes by creating educational content, practice tests, and study resources for students preparing for NEET and Pharmacy examinations. With a strong understanding of **Biology, Chemistry, and Pharmacy**, Diksha focuses on developing clear, exam-oriented content that helps students strengthen their concepts and improve their preparation. At SoloTutes, she writes educational articles and develops practice questions and tests designed to support students in their learning and competitive exam preparation.

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