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

6. Chromosomal Variation

Chromosomal Rearrangements: Overview

Genetics

6. Chromosomal Variation

Chromosomal Rearrangements: Overview

Previous problemNext problem

Struggling with Genetics?

Join thousands of students who trust us to help them ace their exams!Watch the first video

Multiple Choice

Which type of chromatin is typically found near centromeres and telomeres and remains highly condensed throughout the cell cycle?

Nucleolar chromatin

Constitutive heterochromatin

Euchromatin

Facultative heterochromatin

Previous problemNext problem

Verified step by step guidance

Understand the two main types of chromatin: euchromatin and heterochromatin. Euchromatin is less condensed and transcriptionally active, while heterochromatin is more condensed and generally transcriptionally inactive.

Recognize that heterochromatin can be further divided into constitutive and facultative heterochromatin. Constitutive heterochromatin is always condensed and found in specific regions of the chromosome, whereas facultative heterochromatin can switch between condensed and relaxed states depending on the cell type or developmental stage.

Identify the typical locations of constitutive heterochromatin, which are near centromeres and telomeres. These regions remain highly condensed throughout the cell cycle to maintain chromosome stability and integrity.

Recall that nucleolar chromatin is associated with the nucleolus and involved in ribosomal RNA synthesis, so it is not the chromatin type found near centromeres and telomeres.

Conclude that the chromatin type that remains highly condensed near centromeres and telomeres throughout the cell cycle is constitutive heterochromatin.