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Molecular Basis of Inheritance — Flashcards

ICSE · Class 12 · Biology

45 flashcards for Molecular Basis of Inheritance (ICSE Class 12 Biology) to test yourself on key terms and facts. Sample: "What is a gene?"

130 questions45 flashcards4 formulas & key relations5 concepts

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A flowchart illustrating the sequential steps involved in DNA fingerprinting (DNA profiling), from DNA isolation to the detection of hybridized DNA fragments, including restriction digestion, gel elec
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45 Flashcards·
GenesGene sub-unitsProperties of genesHistory of nucleic acidsNucleic acidsDNA and RNA
Card 1Genes

What is a gene?

Answer

A gene is a unit of information that directs the activity of a cell or organism during its lifetime. It also passes its message to the progeny when the cell or organism divides or reproduces.

Card 2Genes

Who coined the term gene, and when?

Answer

The term gene was coined by W. Johannsen in 1909.

Card 3Gene sub-units

What are cistron, recon, and muton?

Answer

Cistron is the continuous segment of DNA that specifies one polypeptide chain. Recon is the smallest unit that gives rise to new forms by recombination. Muton is the smallest length of DNA capable of …

Card 4Properties of genes

What are the main properties of genes as genetic material?

Answer

Genes determine physical and metabolic characteristics, are situated in chromosomes, occur in several genes on each chromosome, occupy fixed positions, are arranged in linear order, can exist in diffe…

Card 5Genes

What is the role of genes in inheritance?

Answer

Genes carry hereditary information, help in faithful replication, allow occasional mutation, and store the instructions needed to control the functions of a cell.

Card 6History of nucleic acids

What did Friedrich Miescher discover?

Answer

Friedrich Miescher isolated nuclein from pus cell nuclei in 1869. Nuclein was later renamed nucleic acid by Altmann in 1889.

Card 7Nucleic acids

What are nucleotides made of?

Answer

A nucleotide has three parts: a nitrogenous base, a pentose sugar, and phosphoric acid. Nucleotides join by phosphodiester bonds to form polynucleotide chains.

Card 8DNA and RNA

What is the difference between DNA and RNA sugar and bases?

Answer

DNA contains deoxyribose sugar and the bases adenine, guanine, cytosine, and thymine. RNA contains ribose sugar and the bases adenine, guanine, cytosine, and uracil. Uracil replaces thymine in RNA.

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Frequently Asked Questions

What are the important topics in Molecular Basis of Inheritance for ICSE Class 12 Biology?
Key topics in Molecular Basis of Inheritance include Genes and the Nature of Genetic Material, DNA and RNA: Structure and Base Composition, DNA Double Helix and Packaging of DNA, Replication of DNA. Study these first, then practise questions on each for the ICSE Class 12 board exam.
How many flashcards are available for Molecular Basis of Inheritance?
There are 45 flashcards for Molecular Basis of Inheritance covering key definitions, facts and ideas. A few sample cards are shown on this page.
How should I revise Molecular Basis of Inheritance for the ICSE Class 12 board exam?
Learn the core ideas first, then work through the 130 practice questions on Molecular Basis of Inheritance. Revise definitions regularly and use flashcards for quick recall before the exam.

Sources & Official References

Content is aligned to the official syllabus. Refer to the board website for the latest curriculum.

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