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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 statement best describes the relationship between DNA and histones in eukaryotic cells?

Histones degrade DNA to regulate gene expression.

DNA wraps around histone proteins to form nucleosomes, which help compact the DNA within the nucleus.

DNA directly synthesizes histone proteins during transcription.

Histones are enzymes that replicate DNA during cell division.

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Verified step by step guidance

Understand the role of DNA and histones in eukaryotic cells: DNA contains genetic information, while histones are proteins associated with DNA packaging.

Recall that DNA in eukaryotic cells is not free-floating but is organized into a compact structure to fit inside the nucleus.

Recognize that histones serve as spools around which DNA winds, forming a complex called a nucleosome.

Know that nucleosomes help in compacting DNA and also play a role in regulating gene expression by controlling access to DNA.

Eliminate incorrect statements by understanding that histones do not degrade DNA, do not synthesize proteins, and are not enzymes involved in DNA replication.