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Principles of Inheritance and Variation
Principles of Inheritance and Variation — NEET/JEE Questions, Notes & Weightage
Class 12 Genetics and Evolution NEET weightage: Very High 0 questions
Covers Mendelian genetics, dihybrid/monohybrid crosses, deviations from Mendelism (codominance, multiple alleles), linkage, sex determination, and human genetic disorders (pedigree analysis). One of NEET Biology's single highest-weightage chapters, with genetics numericals appearing almost every year.
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Topics inside Principles of Inheritance and Variation
Pathology
39
Medicine
28
Pediatrics
20
Gynaecology & Obstetrics
13
Genetics
11
General pathology
8
Ophthalmology
8
Surgery
8
Biochemistry
6
All India exam
6
miscellaneous
5
Social & Preventive Medicine
5
ENT
5
Unknown
5
Genetics And Genetic Disorders
4
General anatomy
3
C.V.S
3
NEET Jan 2020
3
Dental
3
Endocrinology
3
Social science, Mental health & Genetics
3
General
3
Blood
3
Physiology
3
Skin
3
Metabolism of nucleic acids
2
Forensic Medicine
2
Misc. (R.B.C)
2
Autoimmune skin disorders
2
Inborn Errors of Metabolism
2
Mendelian Disorders: Single-Gene Defects
2
Psychiatry
2
Microbiology
2
Skeletal system
2
Cytogenetic Disorders
2
Nervous system
2
Haematology
2
Diagnosis in obstetrics
2
Genetic Disorders
2
Impoant Genetic Syndromes
2
C.N.S
2
Anaesthesia
2
Hemolytic anemia
2
Neoplasia
2
Lens
2
Complement system
1
JIPMER 2017
1
Small and Large Intestines
1
ULTRASOUND
1
Ear
1
Urinary tract
1
Statistical Tests
1
Metabolism of Purines and Pyrimidines
1
General surgery
1
G.I.T
1
Ataxic Disorders
1
Schizophrenia Spectrum and Other Psychotic Disorders
1
Fluid and Electrolyte Treatment of Specific Disorders
1
Nasal Polyps
1
Glaucoma
1
Physiological changes during Pregnancy
1
General Considerations - Infectious Diseases
1
Viral Infections
1
Head & Neck
1
Pharmacology
1
Gastro-Intestinal Tract
1
Genetics of Common Disorders
1
FMGE 2019
1
Identification
1
Tumors
1
Naevi and vessel related disorders
1
Congenital malformations
1
Transcription
1
Neurotic Disorders
1
Infection
1
Megaloblastic Anemia
1
Skeletal infections
1
Misc.
1
Concept of Health and Disease
1
Intra Uterine Growth Restriction, Intrapaum and Antepaum Fetal Surviellance
1
Metabolism of carbohydrate
1
Immunology
1
Immunology Pa 1 (Immune Response, Antigen-Antibody Reactions, Hypersensitivity, Structure of Immune System, Immunodeficiency Disorders)
1
Neuro-Ophthalmology
1
Fluid and electrolytes
1
Miscellaneous (Bio-Chemistry)
1
Central Nervous system
1
Vestibulobullous disorders
1
Types of Genetic Disorders
1
Radiotherapy
1
Orthopaedics
1
Vitamin D
1
Disease Causation, Measurements, Milestones
1
Molecular Biology Techniques
1
Hemoglobinopathies: Sickle cell anemia
1
Molecular Genetics
1
Sickle Cell Disease, G6PD deficiency and other Hemolytic Anemia
1
Immune system
1
Miscellaneous (Gynae)
1
Sickle Cell Anemia
1
Hematology
1
Contrast Agents
1
Genetic Basics Of Carcinogenesis
1
New born infants
1
Systemic Bacteriology (Gram Positive Bacilli, Gram Negative Bacilli)
1
Thorax
1
Growth and development
1
Musculoskeletal Radiology
1
Frequently asked questions
Why is this chapter consistently so high-yield for NEET?
It combines conceptual theory with calculable genetics problems (cross ratios, probability) — giving examiners both factual and numerical question formats from the same chapter.
What genetics numericals should I practise most?
Dihybrid cross ratios, test-cross outcomes, and pedigree-analysis problems for sex-linked disorders (haemophilia, colour blindness) are the most frequently asked numerical formats.
Are human genetic disorders (Down syndrome, haemophilia, etc.) tested directly?
Yes — both chromosomal disorders (Down, Klinefelter, Turner syndrome) and Mendelian disorders (haemophilia, sickle-cell anaemia, colour blindness) are regularly asked, often via inheritance pattern questions.
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