Principles of Inheritance and Variation

109 topics, ranked by how often each is asked.

Practise Principles of Inheritance and VariationBrowse all questions
  • 198 questions
  • 38 papers
  • 5.62% of Biology

Topics

The squares are the last ten exam years: filled means it was asked that year.

Topics

109 topics · 198 questions
  1. 1Polygenic Inheritance2%4 questionsPractise Polygenic Inheritance
  2. 2Dihybrid Cross and Law of Independent Assortment0.5%1 questionPractise Dihybrid Cross and Law of Independent Assortment
  3. 3Pedigree Analysis3.5%7 questionsPractise Pedigree Analysis
  4. 4Test Cross4%8 questionsPractise Test Cross
  5. 5Incomplete Dominance in Snapdragon0.5%1 questionPractise Incomplete Dominance in Snapdragon
  6. 6Genetics Terminology (Allele, Test Cross, Back Cross, Ploidy)0.5%1 questionPractise Genetics Terminology (Allele, Test Cross, Back Cross, Ploidy)
  7. 7Mendel's Law of Dominance1%2 questionsPractise Mendel's Law of Dominance
  8. 8Chromosomal Basis of Genetic Disorders0.5%1 questionPractise Chromosomal Basis of Genetic Disorders
  9. 9ABO Blood Group Genetics (Multiple Alleles)0.5%1 questionPractise ABO Blood Group Genetics (Multiple Alleles)
  10. 10Inheritance of One Gene – Pleiotropy0.5%1 questionPractise Inheritance of One Gene – Pleiotropy
  11. 11Linkage and Recombination – Genetic Mapping0.5%1 questionPractise Linkage and Recombination – Genetic Mapping
  12. 12Chromosomal Disorders – Klinefelter's Syndrome1%2 questionsPractise Chromosomal Disorders – Klinefelter's Syndrome
  13. 13Chromosomal Disorders – Down's Syndrome1.5%3 questionsPractise Chromosomal Disorders – Down's Syndrome
  14. 14Mendel's Laws of Inheritance1%2 questionsPractise Mendel's Laws of Inheritance
  15. 15Sex Determination2.5%5 questionsPractise Sex Determination
  16. 16Mendelian Disorders3%6 questionsPractise Mendelian Disorders
  17. 17Linkage and Recombination3%6 questionsPractise Linkage and Recombination
  18. 18Sex-linked Inheritance – Colour Blindness1.5%3 questionsPractise Sex-linked Inheritance – Colour Blindness
  19. 19Linkage and Recombination – Gene Mapping1%2 questionsPractise Linkage and Recombination – Gene Mapping
  20. 20Mendelian Disorders – Sickle-cell Anaemia1.5%3 questionsPractise Mendelian Disorders – Sickle-cell Anaemia
  21. 21Inheritance of One Gene – Multiple Alleles and Codominance0.5%1 questionPractise Inheritance of One Gene – Multiple Alleles and Codominance
  22. 22Chromosomal Theory of Inheritance2%4 questionsPractise Chromosomal Theory of Inheritance
  23. 23Mendel's Experiments1.5%3 questionsPractise Mendel's Experiments
  24. 24Linkage and Recombination – Genetic Maps1%2 questionsPractise Linkage and Recombination – Genetic Maps
  25. 25Inheritance of One Gene – Incomplete Dominance0.5%1 questionPractise Inheritance of One Gene – Incomplete Dominance
  26. 26Sickle-cell anaemia - point mutation0.5%1 questionPractise Sickle-cell anaemia - point mutation
  27. 27Types of gene interaction/inheritance patterns0.5%1 questionPractise Types of gene interaction/inheritance patterns
  28. 28Haplodiploidy - sex determination in honeybees0.5%1 questionPractise Haplodiploidy - sex determination in honeybees
  29. 29Sickle-cell anaemia - molecular basis (point mutation)0.5%1 questionPractise Sickle-cell anaemia - molecular basis (point mutation)
  30. 30ABO blood group inheritance1%2 questionsPractise ABO blood group inheritance
  31. 31Chromosomal sex determination (XO type)0.5%1 questionPractise Chromosomal sex determination (XO type)
  32. 32Haplodiploidy - gamete formation in male honeybees0.5%1 questionPractise Haplodiploidy - gamete formation in male honeybees
  33. 33Patterns of inheritance and their examples0.5%1 questionPractise Patterns of inheritance and their examples
  34. 34Aneuploidy and polyploidy0.5%1 questionPractise Aneuploidy and polyploidy
  35. 35Monohybrid/dihybrid cross - genotype determination0.5%1 questionPractise Monohybrid/dihybrid cross - genotype determination
  36. 36Chromosomal aberrations - aneuploidy0.5%1 questionPractise Chromosomal aberrations - aneuploidy
  37. 37Mendel's experiments on garden pea0.5%1 questionPractise Mendel's experiments on garden pea
  38. 38Pleiotropy1.5%3 questionsPractise Pleiotropy
  39. 39Phenotypic ratios for different cross types0.5%1 questionPractise Phenotypic ratios for different cross types
  40. 40Induction of polyploidy0.5%1 questionPractise Induction of polyploidy
  41. 41Test cross - expected phenotypic ratio0.5%1 questionPractise Test cross - expected phenotypic ratio
  42. 42Sickle cell anemia - point mutation0.5%1 questionPractise Sickle cell anemia - point mutation
  43. 43Dihybrid cross with one gene showing incomplete dominance0.5%1 questionPractise Dihybrid cross with one gene showing incomplete dominance
  44. 44Molecular basis of sickle cell anaemia0.5%1 questionPractise Molecular basis of sickle cell anaemia
  45. 45XO type of sex determination in grasshopper0.5%1 questionPractise XO type of sex determination in grasshopper
  46. 46Dihybrid cross1%2 questionsPractise Dihybrid cross
  47. 47Pedigree analysis symbols0.5%1 questionPractise Pedigree analysis symbols
  48. 48Sex-linked inheritance - haemophilia0.5%1 questionPractise Sex-linked inheritance - haemophilia
  49. 49Multiple alleles - ABO blood groups2%4 questionsPractise Multiple alleles - ABO blood groups
  50. 50Chromosomal disorders4.5%9 questionsPractise Chromosomal disorders
  51. 51Punnett square0.5%1 questionPractise Punnett square
  52. 52Law of dominance0.5%1 questionPractise Law of dominance
  53. 53Pleiotropy, co-dominance and sex determination0.5%1 questionPractise Pleiotropy, co-dominance and sex determination
  54. 54History of genetics – scientists and contributions0.5%1 questionPractise History of genetics – scientists and contributions
  55. 55Sex-linked inheritance5.1%10 questionsPractise Sex-linked inheritance
  56. 56ABO blood groups – multiple alleles and co-dominance0.5%1 questionPractise ABO blood groups – multiple alleles and co-dominance
  57. 57Mendel's experiments – seven characters0.5%1 questionPractise Mendel's experiments – seven characters
  58. 58Mendel's experiments – history0.5%1 questionPractise Mendel's experiments – history
  59. 59Mendelian disorders – thalassemia and sickle-cell anaemia0.5%1 questionPractise Mendelian disorders – thalassemia and sickle-cell anaemia
  60. 60Monohybrid cross – genotypic ratio0.5%1 questionPractise Monohybrid cross – genotypic ratio
  61. 61Genetic disorders1.5%3 questionsPractise Genetic disorders
  62. 62Dominance, co-dominance, pleiotropy and polygenic inheritance0.5%1 questionPractise Dominance, co-dominance, pleiotropy and polygenic inheritance
  63. 63Sex-linked disorders – haemophilia1%2 questionsPractise Sex-linked disorders – haemophilia
  64. 64Chromosomal aberrations – translocation0.5%1 questionPractise Chromosomal aberrations – translocation
  65. 65True-breeding lines0.5%1 questionPractise True-breeding lines
  66. 66Genetic variation0.5%1 questionPractise Genetic variation
  67. 67Chromosomal aberrations0.5%1 questionPractise Chromosomal aberrations
  68. 68Multiple allelism0.5%1 questionPractise Multiple allelism
  69. 69Mendelian terminology0.5%1 questionPractise Mendelian terminology
  70. 70Multiple alleles and codominance0.5%1 questionPractise Multiple alleles and codominance
  71. 71Linkage1.5%3 questionsPractise Linkage
  72. 72Codominance1.5%3 questionsPractise Codominance
  73. 73Gene interaction0.5%1 questionPractise Gene interaction
  74. 74Incomplete dominance1%2 questionsPractise Incomplete dominance
  75. 75Mutation2%4 questionsPractise Mutation
  76. 76Sex determination in humans1%2 questionsPractise Sex determination in humans
  77. 77Multiple alleles and co-dominance1%2 questionsPractise Multiple alleles and co-dominance
  78. 78Mendel's laws0.5%1 questionPractise Mendel's laws
  79. 79Sex-influenced and sex-limited traits0.5%1 questionPractise Sex-influenced and sex-limited traits
  80. 80Biostatistics and Variation0.5%1 questionPractise Biostatistics and Variation
  81. 81Monohybrid Cross and Test Cross0.5%1 questionPractise Monohybrid Cross and Test Cross
  82. 82Law of Independent Assortment0.5%1 questionPractise Law of Independent Assortment
  83. 83Drosophila as Experimental Material0.5%1 questionPractise Drosophila as Experimental Material
  84. 84Genotype and Phenotype0.5%1 questionPractise Genotype and Phenotype
  85. 85Extranuclear Inheritance1%2 questionsPractise Extranuclear Inheritance
  86. 86Gamete Formation0.5%1 questionPractise Gamete Formation
  87. 87Special Chromosomes: Polytene Chromosomes0.5%1 questionPractise Special Chromosomes: Polytene Chromosomes
  88. 88Cytoplasmic (Extranuclear) Inheritance0.5%1 questionPractise Cytoplasmic (Extranuclear) Inheritance
  89. 89Gamete Formation and Independent Assortment0.5%1 questionPractise Gamete Formation and Independent Assortment
  90. 90Inheritance of Three Genes0.5%1 questionPractise Inheritance of Three Genes
  91. 91Dihybrid Cross and Test Cross1%2 questionsPractise Dihybrid Cross and Test Cross
  92. 92Cytoplasmic (Maternal) Inheritance0.5%1 questionPractise Cytoplasmic (Maternal) Inheritance
  93. 93Mutation: Induced Mutations0.5%1 questionPractise Mutation: Induced Mutations
  94. 94Cytoplasmic Inheritance1%2 questionsPractise Cytoplasmic Inheritance
  95. 95Mendel's Experiments: Types of Crosses0.5%1 questionPractise Mendel's Experiments: Types of Crosses
  96. 96Mendel's Laws: Independent Assortment0.5%1 questionPractise Mendel's Laws: Independent Assortment
  97. 97Mendel's Seven Characters1%2 questionsPractise Mendel's Seven Characters
  98. 98Sex-limited and Sex-influenced Traits0.5%1 questionPractise Sex-limited and Sex-influenced Traits
  99. 99Sex Determination: Genic Balance0.5%1 questionPractise Sex Determination: Genic Balance
  100. 100Linkage Maps1%2 questionsPractise Linkage Maps
  101. 101Monohybrid Cross0.5%1 questionPractise Monohybrid Cross
  102. 102X-linked Dominant Inheritance0.5%1 questionPractise X-linked Dominant Inheritance
  103. 103Molecular Basis of Mendel's Traits0.5%1 questionPractise Molecular Basis of Mendel's Traits
  104. 104Gene Interaction: Complementary Genes1%2 questionsPractise Gene Interaction: Complementary Genes
  105. 105Co-dominance0.5%1 questionPractise Co-dominance
  106. 106Linkage: Test Cross0.5%1 questionPractise Linkage: Test Cross
  107. 107Sex Determination: Probability0.5%1 questionPractise Sex Determination: Probability
  108. 108Dosage Compensation: Barr Body0.5%1 questionPractise Dosage Compensation: Barr Body
  109. 109Rh Factor and Erythroblastosis Foetalis0.5%1 questionPractise Rh Factor and Erythroblastosis Foetalis

Questions per paper

Asked in 16 of the last 16 papers (2017–2026).

  1. 2026: 7 questions
  2. 2026 Re-NEET: 3 questions
  3. 2025: 3 questions
  4. 2024: 6 questions
  5. 2024 Re-NEET: 6 questions
  6. 2023: 5 questions
  7. 2023 Manipur: 7 questions
  8. 2022: 6 questions
  9. 2022 Phase 2: 6 questions
  10. 2021: 2 questions
  11. 2020: 4 questions
  12. 2020 Phase-2: 3 questions
  13. 2019: 5 questions
  14. 2019 Odisha: 4 questions
  15. 2018: 4 questions
  16. 2017: 5 questions

Concepts tested

  • Test cross 4
  • ABO blood groups 3
  • ABO blood group inheritance 2
  • Autosomal recessive inheritance 2
  • Chromosomal disorders 2
  • Chromosomal theory of inheritance 2
  • Codominance 2
  • Colour blindness cross 2
  • Gene order from recombination frequencies 2
  • Linkage 2
  • Linkage prevents independent assortment 2
  • Multiple alleles - ABO blood groups 2
  • Pleiotropy 2
  • Point mutation 2
  • Punnett square 2
  • Quantitative traits 2
  • Sturtevant and gene mapping 2
  • Trisomy 21 2