CUET Biology Syllabus 2026: Download Official PDF & Detailed Exam Pattern

CUET Biology Syllabus 2026

The CUET Biology Syllabus 2026 has been officially released by the National Testing Agency (NTA). It is based on the NCERT Class 12 Biology textbook and is divided into five comprehensive units: Reproduction, Genetics and Evolution, Biology and Human Welfare, Biotechnology and its Applications, and Ecology and Environment. This syllabus is designed for the Common University Entrance Test (CUET) UG 2026, specifically for subject code 304 (Biology/Biological Science/Biotechnology/Biochemistry). The exam will be conducted in Computer-Based Test (CBT) mode, comprising 50 multiple-choice questions to be answered in 60 minutes.

Candidates aspiring for admission to undergraduate programs such as B.Sc. (Hons.) in Botany, Zoology, Biology, Biotechnology, Microbiology, and related disciplines in central and participating universities must thoroughly prepare according to this syllabus.

Direct Link to CUET Biology Syllabus 2026: Click Here

Overview of CUET Biology 2026

CUET Biology Exam Pattern 2026

CUET Biology Syllabus 2026 – Complete Detailed Topics

Unit-I: Reproduction

1. Sexual Reproduction in Flowering Plants: Pre-fertilisation: structure and events stamen, microsporangium and pollen grain, pistil, megasporangium and embryo sac; Development of male (microsporogenesis) and female gametophyte (megasporogenesis); Pollination types, agents and examples; Out breeding devices; Pollen-pistil interaction; Double fertilisation; Post fertilisation: structure and events development of endosperm and embryo; Formation of seed and fruit and parthenocarpy; Significance of seed in angiosperms; Apomixis and polyembryony.

2. Human Reproduction: Male and female reproductive system; Microscopic anatomy of testis and ovary; Gametogenesis spermatogenesis and oogenesis; Menstrual cycle; Fertilisation, embryo development up to blastocyst formation, implantation; Pregnancy and embryonic development and placenta; Parturition and lactation.

3. Reproductive Health: Problems and strategies amniocentesis; Population stabilisation and birth control various methods of contraception; Medical termination of pregnancy (MTP); Sexually transmitted infections (STIs); Infertility Assisted reproductive technologies (IVF, ZIFT, GIFT, ICSI and IUI).

Unit-II: Genetics and Evolution

1. Principles of Inheritance and Variation: Mendel’s law of inheritance: Inheritance of one gene Law of dominance, law of segregation (test and back cross); Deviation from Mendelism incomplete dominance and co-dominance; Multiple alleles and inheritance of blood groups; Inheritance of two genes law of independent assortment, dihybrid cross; Chromosomal theory of inheritance; Linkage and recombination; Polygenic inheritance; Pleiotropy; Sex determination in humans, birds and honey bee; Mutation; Genetic disorders pedigree analysis, Mendelian disorders (colour blindness, haemophilia, sickle-cell anaemia, phenylketonuria and thalassemia), chromosomal disorders in humans (aneuploidy, polyploidy, Down's syndrome, Turner's syndrome and Klinefelter's syndrome).

2. Molecular Basis of Inheritance: Structure and packaging of DNA helix; Search for genetic material (transforming principle and Hershey-Chase experiment); Properties of genetic material; Replication (Meselson and Stahl’s experiment); Transcription transcription unit and gene; RNA world types of RNA and process of transcription; Genetic code and mutations; tRNA; Translation; Regulation of gene expression Lac operon; Human Genome Project (goals, salient features and applications); DNA fingerprinting (polymorphism and VNTR).

3. Evolution: Origin of life Miller’s experiment; Concepts of evolution (Darwin's contribution); Evidences for evolution (embryology, paleontology, comparative anatomy, divergent and convergent evolution and industrial evolution); Adaptive radiation; Biological evolution; Natural selection; Mechanism of evolution; Hardy-Weinberg principle and affecting factors (gene migration, genetic drift, mutation, recombination and natural selection); Evolution of plants and vertebrates through geological periods; Origin and evolution of man.

Unit-III: Biology and Human Welfare

1. Human Health and Disease: Introduction about health; Common diseases in humans (typhoid, pneumonia, common cold, malaria, amoebiasis, ascariasis, filariasis and ringworms); Immunity innate and acquired immunity, active and passive immunity, vaccination and immunisation, allergies, auto-immunity and immune system in human; AIDS; Cancer; Drugs and alcohol abuse - adolescence, addiction, effects of drug abuse, prevention and control.

2. Microbes in Human Welfare: Microbes in household products; Microbes in industrial products beverages, antibiotics, enzymes and bioactive molecules; Microbes in sewage treatment and production of biogas, Microbes as biocontrol agents and biofertilisers.

Unit-IV: Biotechnology and its Applications

1. Biotechnology: Principles and Processes: Principles of biotechnology; Tools of recombinant DNA technology restriction enzymes, cloning vectors, competent host; Processes of rDNA technology isolation, amplification of gene (PCR), insertion of rDNA in host and bioreactors; Downstream processing.

2. Biotechnology and its Applications: Application of biotechnology in agriculture tissue culture, genetically modified organisms, Bt cotton, RNA interference; Biotechnology in medicine insulin, gene therapy and molecular diagnosis; Transgenic animals; Ethical issues biopiracy and patents.

Unit-V: Ecology and Environment

1. Organisms and Populations: Population attributes birth and death rate, age pyramids; Population growth exponential and logistic growth; Life history variation; Population interactions predation, competition, parasitism, commensalism, mutualism and amensalism.

2. Ecosystem: Structure and function; Productivity; Decomposition; Energy flow different trophic levels, food chain and food web; Ecological pyramids pyramid of energy, biomass and number.

3. Biodiversity and Conservation: Biodiversity concept, patterns and importance; Causes of biodiversity loss; Biodiversity conservation approaches (narrowly utilitarian, broadly utilitarian and ethical); Methods of biodiversity conservation in situ (endemism, hotspots and sacred groves etc.), ex situ (Wildlife safaris, zoological parks and cryopreservation etc.).

Selection Process

The selection for CUET UG 2026 Biology is based solely on the marks obtained in the Biology domain paper. Candidates must appear for the computer-based test and score as per the cutoff of the respective university they apply to. The syllabus outlined above covers all topics from which questions will be asked. There is no interview or additional round for most programs; admission is purely merit-based on CUET scores.

Preparation Tips

To excel in CUET Biology 2026, candidates should thoroughly study the NCERT Class 12 Biology textbook as the syllabus is entirely based on it. Focus on understanding concepts rather than rote memorization. Practice MCQs from previous years and take mock tests to improve speed and accuracy. Pay special attention to diagrams and processes, as questions often test application-based knowledge. Regular revision of all five units is essential to cover the vast syllabus effectively.