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

17. Mutation, Repair, and Recombination

Types of Mutations

Genetics

17. Mutation, Repair, and Recombination

Types of Mutations

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Multiple Choice

Changes in the codon reading frame can be caused from all but which of the following?

Frameshift mutations

Insertions

Deletions

Missense mutations

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Verified step by step guidance

Understand the concept of a codon reading frame: In genetics, the reading frame refers to the way nucleotides in mRNA are grouped into codons, each consisting of three nucleotides, which are then translated into amino acids.

Recognize what frameshift mutations are: Frameshift mutations occur when nucleotides are inserted or deleted from the DNA sequence, altering the reading frame and potentially changing every subsequent amino acid in the sequence.

Identify the impact of insertions and deletions: Both insertions and deletions can cause frameshift mutations, as they change the number of nucleotides in the sequence, disrupting the grouping of nucleotides into codons.

Clarify what missense mutations are: Missense mutations result in a single nucleotide change that leads to the substitution of one amino acid for another in the protein sequence, but they do not alter the reading frame.

Conclude why missense mutations do not cause changes in the reading frame: Since missense mutations only affect one codon and do not add or remove nucleotides, they do not shift the reading frame, unlike frameshift mutations, insertions, and deletions.