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

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Multiple Choice

Inversions cause what type of chromosomal rearrangement?

Unbalanced

Uneven

Balanced

Even

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Verified step by step guidance

Understand the concept of chromosomal inversions: Inversions occur when a segment of a chromosome is reversed end to end. This can happen due to a breakage and rejoining of the chromosome segment.

Recognize the types of chromosomal rearrangements: Chromosomal rearrangements can be classified as balanced or unbalanced. Balanced rearrangements do not result in a gain or loss of genetic material, whereas unbalanced rearrangements do.

Identify the characteristics of balanced rearrangements: In a balanced rearrangement, the total amount of genetic material remains the same, although the order of genes may be altered. This means that the genetic information is conserved, but its arrangement is changed.

Apply this understanding to inversions: Since inversions involve the reversal of a chromosome segment without adding or removing genetic material, they are considered balanced rearrangements.

Conclude that inversions are a type of balanced chromosomal rearrangement, as they do not lead to a change in the overall amount of genetic material, only its orientation.