Table of contents

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1. Introduction to Genetics51m
2. Mendel's Laws of Inheritance3h 37m
3. Extensions to Mendelian Inheritance2h 41m
4. Genetic Mapping and Linkage2h 28m
5. Genetics of Bacteria and Viruses1h 21m
6. Chromosomal Variation1h 48m
7. DNA and Chromosome Structure56m
8. DNA Replication1h 10m
9. Mitosis and Meiosis1h 34m
10. Transcription1h 0m
11. Translation58m
12. Gene Regulation in Prokaryotes1h 19m
13. Gene Regulation in Eukaryotes44m
14. Genetic Control of Development44m
15. Genomes and Genomics1h 50m
16. Transposable Elements47m
17. Mutation, Repair, and Recombination1h 6m
18. Molecular Genetic Tools19m
- Genetic Cloning
  9m
- Methods for Analyzing DNA
  9m
19. Cancer Genetics29m
- Overview of Cancer
  21m
- Cancer Mutations
  7m
20. Quantitative Genetics1h 26m
21. Population Genetics50m
- Hardy Weinberg
  19m
- Allelic Frequency Changes
  31m
22. Evolutionary Genetics29m

7. DNA and Chromosome Structure

DNA Structure

Genetics

7. DNA and Chromosome Structure

DNA Structure

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Multiple Choice

Which feature of the Watson and Crick model of DNA best illustrates how biological information is coded in a DNA molecule?

The specific sequence of nitrogenous bases along the DNA strands

The uniform diameter of the helix

The double helix shape formed by two antiparallel strands

The presence of a sugar-phosphate backbone

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Verified step by step guidance

Understand that the question asks which feature of the Watson and Crick DNA model best explains how biological information is stored in DNA.

Recall that DNA is composed of a sugar-phosphate backbone and nitrogenous bases (adenine, thymine, cytosine, guanine) arranged along the strands.

Recognize that the sugar-phosphate backbone provides structural support but does not encode information.

Note that the double helix shape and antiparallel strands describe the physical structure but do not directly represent the coding of information.

Focus on the specific sequence of nitrogenous bases along the DNA strands, as this sequence acts like a code that stores genetic information, determining the instructions for building proteins.