Table of contents

1. Introduction to Microbiology3h 22m
2. Disproving Spontaneous Generation1h 18m
3. Chemical Principles of Microbiology3h 38m
4. Water1h 28m
5. Molecules of Microbiology2h 23m
6. Cell Membrane & Transport3h 28m
7. Prokaryotic Cell Structures & Functions5h 52m
8. Eukaryotic Cell Structures & Functions2h 18m
9. Microscopes2h 46m
10. Dynamics of Microbial Growth4h 36m
11. Controlling Microbial Growth4h 10m
12. Microbial Metabolism5h 16m
13. Photosynthesis2h 31m
14. DNA Replication2h 25m
15. Central Dogma & Gene Regulation7h 14m
16. Microbial Genetics4h 44m
17. Biotechnology3h 0m
18. Viruses, Viroids, & Prions4h 56m
19. Innate Immunity7h 15m
20. Adaptive Immunity7h 14m
21. Principles of Disease6h 57m

15. Central Dogma & Gene Regulation

Eukaryotic Post-Transcriptional Regulation

Microbiology

15. Central Dogma & Gene Regulation

Eukaryotic Post-Transcriptional Regulation

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Multiple Choice

Alternative RNA splicing has been estimated to occur in more than 95% of multi-exon genes. Which of the following is not an evolutionary advantage of alternative RNA splicing?

Alternative RNA splicing increases diversity without increasing genome size.

Different protein variants can be expressed by the same gene in different tissues.

Alternative RNA splicing creates shorter mRNA transcripts.

Different protein variants can be expressed by the same gene during different stages of development.

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Verified step by step guidance

Understand the concept of alternative RNA splicing: It is a process by which different forms of mature mRNA (messenger RNA) are generated from the same gene. This allows a single gene to code for multiple proteins.

Identify the evolutionary advantages of alternative RNA splicing: It increases protein diversity without the need for additional genes, allows for tissue-specific protein expression, and enables different protein variants to be produced at different developmental stages.

Analyze the given options: The first three options describe known advantages of alternative RNA splicing, such as increasing diversity without increasing genome size, allowing tissue-specific expression, and enabling stage-specific expression.

Evaluate the option 'Alternative RNA splicing creates shorter mRNA transcripts': Consider whether this is an advantage. While alternative splicing can result in shorter transcripts, this is not inherently an evolutionary advantage.

Conclude that the option 'Alternative RNA splicing creates shorter mRNA transcripts' does not describe an evolutionary advantage, as the primary benefits of alternative splicing are related to protein diversity and functional adaptability, not transcript length.