Principles of Inheritance and Variation

37 NEET Botany previous year questions (PYQs) from 8 papers, 2021 to 2026, with answers and worked solutions.

About this chapter

Difficulty: 7 easy · 27 moderate · 3 hard.
Most-asked subtopics: ABO blood group inheritance (3), Polygenic Inheritance (2), Dihybrid Cross (2).
Updated 17 July 2026.

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NEET · 2022 · NEET (UG) 2022 — 17 Jul 2022 · Q118Easy
#1Sex Determination
NEET · 2022 · NEET (UG) 2022 — 17 Jul 2022 · Q135Moderate
#2Mendel's Experiments
NEET · 2022 · NEET (UG) 2022 — 17 Jul 2022 · Q142Moderate
#3Mendelian Disorders
NEET · 2022 · NEET (UG) 2022 — 17 Jul 2022 · Q148Moderate
#4Linkage and Independent Assortment
NEET · 2021 · NEET (UG) 2021 — 12 Sep 2021 · Q107Moderate
#5Genetic Drift / Founder Effect
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NEET · 2021 · NEET (UG) 2021 — 12 Sep 2021 · Q126Easy
#6Mendelian Inheritance
NEET · 2021 · NEET (UG) 2021 — 12 Sep 2021 · Q128Moderate
#7Mutation
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q104Moderate
#8Polygenic Inheritance
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q107Moderate
#9Types of Inheritance
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q128Moderate
#10Aneuploidy and Polyploidy
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q148Moderate
#11Dihybrid Cross
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q187Moderate
#12Chromosomal disorders (aneuploidy)
NEET · 2024 · Re-NEET (UG) 2024 — 23 Jun 2024 · Q195Moderate
#13ABO blood group inheritance
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q104Easy
#14Genetics terminology
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q120Easy
#15Test cross
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q130Moderate
#16Law of Dominance
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q134Moderate
#17Incomplete dominance - snapdragon
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q182Moderate
#18Genetic disorders
NEET · 2024 · NEET (UG) 2024 — 05 May 2024 · Q199Moderate
#19ABO blood group inheritance
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q131Moderate
#20Linkage and Recombination (Gene Mapping)
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q132Easy
#21Pleiotropy
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q148Hard
#22Chromosomal Disorders (Klinefelter's Syndrome)
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q163Moderate
#23Chromosomal disorders
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q169ModerateHas image
#24Pedigree analysis symbols
NEET · 2023 · NEET (UG) 2023 — 07 May 2023 · Q191Moderate
#25Inbreeding
NEET · 2026 · Re-NEET (UG) 2026 — 21 Jun 2026 · Q138Moderate
#26Chromosomal disorders - Down's and Turner's syndrome
NEET · 2026 · Re-NEET (UG) 2026 — 21 Jun 2026 · Q147Moderate
#27Hardy-Weinberg equilibrium - genotype frequency
NEET · 2026 · Re-NEET (UG) 2026 — 21 Jun 2026 · Q169Hard
#28ABO blood group inheritance - genotypes
NEET · 2026 · Re-NEET (UG) 2026 — 21 Jun 2026 · Q175Moderate
#29Mendel's monohybrid cross - dominance
NEET · 2026 · NEET (UG) 2026 — 03 May 2026 · Q108Moderate
#30Inheritance Patterns
NEET · 2026 · NEET (UG) 2026 — 03 May 2026 · Q124Moderate
#31Sex Determination in Honeybees
NEET · 2026 · NEET (UG) 2026 — 03 May 2026 · Q143Easy
#32ABO blood group inheritance
NEET · 2026 · NEET (UG) 2026 — 03 May 2026 · Q160Moderate
#33Sickle cell anaemia - molecular basis
NEET · 2026 · NEET (UG) 2026 — 03 May 2026 · Q168Moderate
#34Sex determination - XX-XO type
NEET · 2025 · NEET (UG) 2025 — 04 May 2025 · Q130Moderate
#35Polygenic Inheritance
NEET · 2025 · NEET (UG) 2025 — 04 May 2025 · Q145Easy
#36Dihybrid Cross
NEET · 2025 · NEET (UG) 2025 — 04 May 2025 · Q152HardHas image
#37Pedigree Analysis

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