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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 of the following components make up a DNA molecule?

Ribose sugar, phosphate group, and uracil

Phosphate group, cholesterol, and adenine

Deoxyribose sugar, phosphate group, and nitrogenous bases

Amino acids, fatty acids, and glucose

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Verified step by step guidance

Recall the basic structure of a DNA molecule, which consists of a sugar, a phosphate group, and nitrogenous bases.

Identify the type of sugar present in DNA, which is deoxyribose, distinguishing it from ribose found in RNA.

Recognize that the phosphate group forms the backbone of the DNA strand along with the sugar molecules.

Understand that the nitrogenous bases in DNA include adenine, thymine, cytosine, and guanine, not uracil (which is found in RNA).

Eliminate options that include components not part of DNA, such as cholesterol, amino acids, fatty acids, or glucose, to confirm the correct components.