Table of contents

1. Overview of Cell Biology2h 49m
2. Chemical Components of Cells1h 14m
3. Energy1h 33m
4. DNA, Chromosomes, and Genomes2h 31m
5. DNA to RNA to Protein2h 31m
6. Proteins1h 36m
7. Gene Expression1h 42m
8. Membrane Structure1h 4m
- The Lipid Bilayer
  38m
- Membrane Proteins
  25m
9. Transport Across Membranes1h 52m
10. Anerobic Respiration1h 5m
11. Aerobic Respiration1h 11m
12. Photosynthesis52m
13. Intracellular Protein Transport2h 18m
14. Cell Signaling1h 28m
15. Cytoskeleton and Cell Movement1h 39m
16. Cell Division3h 5m
17. Meiosis and Sexual Reproduction50m
18. Cell Junctions and Tissues48m
19. Stem Cells13m
- Stem Cells
  13m
20. Cancer44m
21. The Immune System1h 6m
22. Techniques in Cell Biology1h 41m

4. DNA, Chromosomes, and Genomes

Evolution of the Genome

Cell Biology

4. DNA, Chromosomes, and Genomes

Evolution of the Genome

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Multiple Choice

Which of the following is not a driver of genome evolution?

Mutations

Gene duplication

Alternative Splicing

Histone modifications

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Verified step by step guidance

Understand the concept of genome evolution, which refers to the process by which a genome changes in structure or size over time.

Identify the common drivers of genome evolution: mutations, gene duplication, and alternative splicing.

Mutations introduce changes in the DNA sequence, which can lead to genetic diversity and evolution.

Gene duplication results in additional copies of genes, providing raw material for evolutionary innovation.

Alternative splicing allows a single gene to produce multiple proteins, increasing protein diversity without altering the genome structure. Histone modifications, however, primarily affect gene expression regulation rather than directly driving genome evolution.