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
- 19. Cancer Genetics29m
- 20. Quantitative Genetics1h 26m
- 21. Population Genetics50m
- 22. Evolutionary Genetics29m
17. Mutation, Repair, and Recombination
DNA Repair
2:08 minutes
Problem 13d
Textbook Question
Textbook QuestionAnswer the following questions concerning the accuracy of DNA polymerase during replication.
If the kind of abnormality identified in part (c) is not corrected before the next DNA replication cycle, what kind of mutation occurs?
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
DNA Polymerase Function
DNA polymerase is an enzyme responsible for synthesizing new DNA strands by adding nucleotides complementary to the template strand during DNA replication. Its accuracy is crucial for maintaining genetic fidelity, as it also possesses proofreading abilities to correct errors that occur during replication.
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08:26
Functional Genomics
Types of Mutations
Mutations are changes in the DNA sequence that can occur due to errors in replication, environmental factors, or other influences. They can be classified into several types, including point mutations (single nucleotide changes), insertions, deletions, and larger chromosomal alterations, each with different implications for gene function and organismal traits.
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Mutations and Phenotypes
Consequences of Uncorrected Errors
If abnormalities in DNA replication are not corrected, they can lead to permanent mutations in the next replication cycle. These mutations can result in altered protein function, which may contribute to diseases, including cancer, or affect the organism's phenotype, depending on the nature and location of the mutation within the genome.
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Proofreading
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