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

13. Gene Regulation in Eukaryotes

Epigenetics, Chromatin Modifications, and Regulation

Genetics

13. Gene Regulation in Eukaryotes

Epigenetics, Chromatin Modifications, and Regulation

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Multiple Choice

Which of the following terms is associated with closed chromatin?

CpG islands

Heterochromatin

Methylation

Euchromatin

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Verified step by step guidance

Understand the concept of chromatin: Chromatin is a complex of DNA and proteins found in the nucleus of eukaryotic cells. It can exist in two forms: euchromatin and heterochromatin.

Define euchromatin: Euchromatin is a less condensed form of chromatin that is generally associated with active transcription. It is often referred to as 'open' chromatin.

Define heterochromatin: Heterochromatin is a tightly packed form of DNA, which is transcriptionally inactive. It is often referred to as 'closed' chromatin.

Explain the role of methylation: DNA methylation is a biochemical process that adds a methyl group to the DNA molecule, often at CpG sites. This process is associated with the repression of gene expression and is a key feature of heterochromatin.

Connect the terms: The term 'heterochromatin' is associated with closed chromatin due to its tightly packed structure and transcriptional inactivity, often maintained by DNA methylation.