#genetic material

BOTANY

Which of the following is NOT an essential property of genetic material?

Genetic material does not directly catalyze biochemical reactions; instead, proteins and ribozymes perform catalytic functions. This follows from latest NCERT 2026-27 principle explaining the concept clearly for NEET students in simple steps as per rationalized syllabus.

Ref: NCERT Biology Textbook - Latest Edition for Academic Session 2026-27 (Botany section, Rationalized Textbook for Class XI and XII), Chapter: Biology - Botany portion (Latest NCERT Textbooks for Academic Session 2026-27 -

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Nucleic Acids - Types and Functions - DNA, RNA

Which biomolecule serves as the genetic material in humans?

DNA (deoxyribonucleic acid) is the primary genetic material in humans, storing hereditary information.

Ref: NCERT Class 12 Chemistry > Chapter 14: Biomolecules > Topic: Nucleic Acids - Types and Functions - DNA, RNA

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Plant tissue culture 2

Cybridization is mainly useful for transfer of:

Cybridization primarily useful for transfer of cytoplasmic traits encoded by mitochondrial or plastid genomes which are generally maternally inherited and cannot be introgressed through nuclear hybridization alone. Key agricultural examples include cytoplasmic male sterility CMS caused by chimeric mitochondrial open reading frames atp6 orf138 orf79 interfering with pollen development essential for hybrid seed production in maize rice sunflower Brassica onion; triazine herbicide resistance due to psbA D1 protein mutation in chloroplast photosystem II; and traits like cold tolerance linked to mi

Ref: Bravo & Evans 2011 cybrid CMS; Kumar et al., Front Plant Sci cytoplasmic traits.

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Biodiversity Conservation - In situ Ex situ Hotspots

Which of the following conservation methods is used to preserve genetic material of endangered species?

Cryopreservation preserves gametes, embryos, seeds, and other genetic material at very low temperatures as an ex situ conservation method.

Ref: NCERT Class 12 Biology Chapter 13: Biodiversity and Conservation Biodiversity Conservation - In situ Ex situ Hotspots

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Human Genome Project and DNA Fingerprinting

Which component of the human genome consists of the highest percentage?

Repetitive sequences make up a large portion of the human genome, while protein-coding genes constitute less than 2%.

Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Human Genome Project and DNA Fingerprinting

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Search for Genetic Material and RNA World

Which of the following is NOT an essential property of genetic material?

Genetic material does not directly catalyze biochemical reactions; instead, proteins and ribozymes perform catalytic functions.

Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World

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Search for Genetic Material and RNA World

What was the key finding of the Hershey and Chase experiment?

Hershey and Chase demonstrated that DNA, not protein, is the genetic material using bacteriophages labeled with radioactive isotopes.

Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World

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Search for Genetic Material and RNA World

Which scientist(s) confirmed that DNA is the genetic material through experiments with bacteriophages?

Hershey and Chase used bacteriophage experiments to confirm that DNA, not protein, is the genetic material.

Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World

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Search for Genetic Material and RNA World

Which of the following is the genetic material in most organisms?

DNA is the genetic material in most organisms, except some viruses where RNA serves as the genetic material.

Ref: NCERT Class 12 Biology Chapter 5: Molecular Basis of Inheritance Search for Genetic Material and RNA World

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Five Kingdom Classification and Kingdom Plantae Animalia

Which statement correctly describes the usual genetic material of plant viruses?

Viruses that infect plants generally possess single-stranded RNA as their genetic material. In contrast, animal viruses may contain single- or double-stranded RNA or double-stranded DNA.

Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Five Kingdom Classification and Kingdom Plantae Animalia

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Viruses Viroids Prions and Lichens

A virus infecting a plant is compared with a bacteriophage. Which combination of genetic material is most consistent wit

Plant viruses generally possess single-stranded RNA, whereas bacteriophages are usually double-stranded DNA viruses. A virus contains either RNA or DNA as its genetic material, never both.

Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Viruses Viroids Prions and Lichens

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Fungi - Deuteromycetes and Economic Importance

An infectious particle remains inert outside its host but takes over host-cell machinery after infection. Which statemen

The particle is a virus. A virus contains either RNA or DNA as its genetic material, but never both. Outside a suitable host it remains inert, while inside the host it uses cellular machinery to produce new virus particles.

Ref: NCERT Class 11 Biology Chapter 2: Biological Classification Fungi - Deuteromycetes and Economic Importance

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