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

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 of the following best describes the difference between a gene mutation and a chromosomal mutation?

A gene mutation affects the sequence of nucleotides within a single gene, while a chromosomal mutation alters the structure or number of entire chromosomes.

A gene mutation always results in a change in chromosome number, while a chromosomal mutation only changes the DNA sequence of a gene.

Gene mutations occur only during meiosis, whereas chromosomal mutations occur only during mitosis.

Gene mutations are always beneficial, while chromosomal mutations are always harmful.

Previous problemNext problem

Verified step by step guidance

Step 1: Understand what a gene mutation is. A gene mutation refers to a change in the nucleotide sequence within a single gene. This can involve substitutions, insertions, or deletions of nucleotides that affect the gene's DNA sequence.

Step 2: Understand what a chromosomal mutation is. A chromosomal mutation involves changes that affect the structure or number of entire chromosomes. This can include deletions, duplications, inversions, translocations, or changes in chromosome number (such as aneuploidy).

Step 3: Compare the scale of the mutations. Gene mutations are small-scale changes affecting only a single gene's sequence, while chromosomal mutations are large-scale changes affecting many genes or entire chromosomes.

Step 4: Evaluate the answer choices based on these definitions. The correct description should reflect that gene mutations affect nucleotide sequences within a gene, and chromosomal mutations alter chromosome structure or number.

Step 5: Eliminate incorrect options by checking if they misrepresent the nature or consequences of gene and chromosomal mutations, such as claiming gene mutations always change chromosome number or that mutations occur only during specific cell divisions.