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

16. Transposable Elements

Discovery of Transposable Elements

Genetics

16. Transposable Elements

Discovery of Transposable Elements

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Multiple Choice

Transposons were discovered by which of the following scientists?

Gregor Mendel

James Watson

Thomas Hunt Morgan

Barbara McClintock

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Understand that the question is about the discovery of transposons, which are DNA sequences that can change their position within the genome.

Recall the historical context of genetics discoveries and the scientists associated with major genetic concepts.

Gregor Mendel is known for his foundational work on inheritance patterns using pea plants, not transposons.

James Watson is famous for co-discovering the structure of DNA, the double helix, but not for transposons.

Barbara McClintock is the scientist credited with discovering transposons through her work on maize genetics, demonstrating mobile genetic elements.

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Related Practice

Multiple Choice

A non-autonomous element is a chromosomal element that can what?

Textbook Question

Describe the difference between DNA transposons and retrotransposons.

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Textbook Question

In enhancer trapping experiments, a minimal promoter and a reporter gene are placed adjacent to the end of a transposon so that genomic enhancers adjacent to the insertion site can act to drive expression of the reporter gene. In a modification of this approach, a series of enhancers and a promoter can be placed at the end of a transposon so that transcription is activated from the transposon into adjacent genomic DNA. What types of mutations do you expect to be induced by such a transposon in a mutagenesis experiment?

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Textbook Question

How are flanking direct repeat sequences created by transposition?

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Multiple Choice

How can the presence of transposable elements within a cell increase genetic diversity?

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Multiple Choice

In Barbara McClintock's study of corn, which of the following kernel phenotypes did she find was due to transposable elements?

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