Biology - Molecular Basis of Inheritance
Practise 11 IAT (IISER) previous year questions on Molecular Basis of Inheritance, compiled from papers spanning 2018 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty IAT (IISER) tests.
Molecular Basis of Inheritance has been asked in 7 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 11 questions in all. 36% of them were easy, 64% moderate and 0% tough. Most of its questions came from 2026, with 2 questions that year. In the last three years (2023–2026) it had 5 questions across 3 papers, about 1.7 per paper.
The chapter's 7 topics are not weighted equally: Transcription (4 questions, 36%), Translation (2 questions, 18%), and Packaging of DNA Helix (1 question, 9%) have been asked the most. Transcription has also led over the last five years, with 3 questions.
- 1Which one of the following is the correct sequence of the coding strand of the given gene?2026Transcription
- 2Which of the following schematics correctly depict a lac operon that can be negatively regulated?2026Regulation of Gene Expression
- 3Which amino acid will be charged on the tRNA with anticodon -GUU- ?2025Translation
- 4What will be the sequence of RNA synthesized using the following DNA template strand? 5'-GTCTAGGCTTCTC-2024Transcription
- 5When the ribosome encounters a stop codon in the mRNA, during translation, which one of the following binds to the stop codon?2023Translation
- 6For which one of the following diseases does the causative agent require the splicing of their hnRNA to generate mature mRNA?2023Transcription
- 7Which one of the following is an example of palindromic DNA sequence?2021Structure of DNA
- 8Motivated by the classic experiment by Frederick Griffith and the work of Avery, Macleod and McCarty to identify the transforming principle,2021The Search for Genetic Material
- 9Which of the following processes is NOT involved in functionalisation of mRNA (from hnRNA) in eukaryotes?2020Transcription
- 10An E. coli whose DNA is fully labeled by is grown in a medium containing . What will be the percentage of hybrid and light DNA molecules at 2019Replication
- 11How many histone molecules are required to wrap roughly 60,000 base pairs (bp) of DNA?2018Packaging of DNA Helix
Frequently Asked Questions
1.How many questions are available for Molecular Basis of Inheritance?
This chapter includes 11 questions compiled from IAT (IISER) papers spanning 2018 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Molecular Basis of Inheritance chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Molecular Basis of Inheritance an important chapter for IAT (IISER) Biology?
Molecular Basis of Inheritance has appeared in 8 of the 10 years of IAT (IISER) papers covered here, with 11 questions across 8 papers - about one per paper it appears in.
4.What is the difficulty level of Molecular Basis of Inheritance questions in IAT (IISER)?
Of the 11 questions analysed for this chapter, 36% are easy, 64% moderate and 0% tough. 2026 had the most, with 2 questions.
5.Which topics in Molecular Basis of Inheritance should I focus on?
These topics have carried the most weightage in Molecular Basis of Inheritance:
- Transcription - 4 questions (36%)
- Translation - 2 questions (18%)
- Packaging of DNA Helix - 1 question (9%)
6.Is Molecular Basis of Inheritance's weightage in IAT (IISER) going up or down?
Across all 8 papers analysed, Molecular Basis of Inheritance has averaged about 1.4 questions per paper. In the last three years (2023–2026), that average has risen, at about 1.7 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.