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

Genomic Comparison

Cell Biology

4. DNA, Chromosomes, and Genomes

Genomic Comparison

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Multiple Choice

Stretches of chromosomes where the gene order is conserved among different species is called what?

Conserved Sequences

Synteny

Purifying Selection

Conserved Selection

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Verified step by step guidance

Understand the concept of 'synteny': Synteny refers to the conservation of blocks of gene order on chromosomes across different species. This implies that certain segments of chromosomes have remained unchanged through evolutionary time.

Differentiate between the given options: 'Conserved Sequences' generally refer to DNA sequences that have remained unchanged across different species, but not necessarily in terms of gene order on chromosomes.

Consider 'Purifying Selection': This is a type of natural selection that removes deleterious alleles from a population, but it does not specifically refer to the conservation of gene order on chromosomes.

Evaluate 'Conserved Selection': This term is not commonly used in the context of gene order conservation across species.

Conclude that 'Synteny' is the most appropriate term for stretches of chromosomes where the gene order is conserved among different species, as it specifically addresses the conservation of gene order rather than just sequence or selection processes.