Molecular Biology and Genetics
15 UPSC CSE (Prelims) Biology previous year questions (PYQs) from 8 papers, 2017 to 2026, with answers and worked solutions.
About this chapter
- Difficulty: 3 easy · 9 moderate · 3 hard.
- Most-asked subtopics: Genetic Engineering (9), Genetics and Bioinformatics (4), Gene Silencing (1).
- Updated 29 August 2026.
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#1ModerateGenetic Engineering
#2ModerateGenetics and Bioinformatics
#3EasyGenetic Engineering
#4HardGenetic Engineering
#5ModerateGene Silencing
#6EasyGenetic Engineering
#7ModerateGenetic Engineering
#8HardGenetic Engineering
#9HardGenetic Engineering
#10ModerateGenetics and Bioinformatics
#11ModerateGenetics and Bioinformatics
#12ModerateGenetics and Bioinformatics
#13ModerateGenetic Engineering
#14ModerateHereditary Diseases
#15EasyGenetic Engineering