Table of contents

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 two important properties of a DNA molecule are essential for its biological function?

Ability to replicate and ability to store genetic information

Ability to transport oxygen and provide structural support

Ability to synthesize proteins and act as a hormone

Ability to catalyze chemical reactions and store energy

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Verified step by step guidance

Identify the primary biological roles of DNA in living organisms, focusing on its molecular functions rather than unrelated physiological roles.

Recall that DNA's main function is to store genetic information, which contains the instructions for building and maintaining an organism.

Understand that DNA must be able to replicate accurately to pass genetic information from one generation to the next, ensuring continuity of life.

Recognize that other options like transporting oxygen, synthesizing proteins, acting as a hormone, catalyzing reactions, or storing energy are functions of other molecules (e.g., hemoglobin, RNA, enzymes, ATP) and not DNA.

Conclude that the two essential properties of DNA for its biological function are its ability to store genetic information and its ability to replicate.