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Molecular Basis of Inheritance

CBSE · Class 12 · Biology

Flashcards for Molecular Basis of Inheritance — CBSE Class 12 Biology. Quick Q&A cards covering key concepts, definitions, and formulas.

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A labeled diagram illustrating the Watson and Crick model of DNA, showing the double helical structure, antiparallel strands, sugar-phosphate backbone, nitrogenous base pairing (A-T, G-C) with hydroge
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50 Flashcards
Card 1DNA Structure

What is DNA and what are its main components?

Answer

DNA (Deoxyribonucleic acid) is a long polymer of deoxyribonucleotides that serves as genetic material in most organisms. Its main components are: 1) Nitrogenous bases (Adenine, Guanine, Cytosine, Thym

Card 2DNA Structure

What is DNA and what are its main components?

Answer

DNA (Deoxyribonucleic acid) is a long polymer of deoxyribonucleotides that serves as genetic material in most organisms. Its main components are: 1) Nitrogenous bases (Adenine, Guanine, Cytosine, Thym

Card 3DNA Structure

State Chargaff's rule and its significance in DNA structure.

Answer

Chargaff's rule states that in double-stranded DNA, the ratio of Adenine to Thymine equals 1, and the ratio of Guanine to Cytosine equals 1. This rule provided crucial evidence for base pairing in DNA

Card 4DNA Structure

State Chargaff's rule and its significance in DNA structure.

Answer

Chargaff's rule states that in double-stranded DNA, the ratio of Adenine to Thymine equals 1, and the ratio of Guanine to Cytosine equals 1. This rule provided crucial evidence for base pairing in DNA

Card 5DNA Structure

List the five salient features of Watson-Crick DNA double helix model.

Answer

1) Made of two polynucleotide chains with sugar-phosphate backbone and bases projecting inside, 2) Two chains have anti-parallel polarity (one 5'→3', other 3'→5'), 3) Bases paired through hydrogen bon

Card 6DNA Structure

List the five salient features of Watson-Crick DNA double helix model.

Answer

1) Made of two polynucleotide chains with sugar-phosphate backbone and bases projecting inside, 2) Two chains have anti-parallel polarity (one 5'→3', other 3'→5'), 3) Bases paired through hydrogen bon

Card 7DNA Packaging

How is DNA packaged in prokaryotes and eukaryotes?

Answer

Prokaryotes: DNA is held with positively charged proteins in the nucleoid region, organized in large loops. Eukaryotes: DNA wraps around histone octamers to form nucleosomes (200 bp DNA per nucleosome

Card 8DNA Packaging

How is DNA packaged in prokaryotes and eukaryotes?

Answer

Prokaryotes: DNA is held with positively charged proteins in the nucleoid region, organized in large loops. Eukaryotes: DNA wraps around histone octamers to form nucleosomes (200 bp DNA per nucleosome

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