Mwk2W08

Mwk2W08 - The first transposons were discovered in the...

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Unformatted text preview: The first transposons were discovered in the 1940s by Barbara McClintock who worked with corn She found that they were responsible for a variety of types of gene mutations, usually * insertions * deletions and * translocations Transposons Transposons are segments of DNA that can move around to different positions in the genome of a single cell. It took about 40 years for other scientists to fully appreciate the significance of Barbara McClintock's discoveries. She was finally awarded a Nobel Prize in 1983. Crazy Barb and her Jumping Genes Class II Transposons Move by a "cut and paste" process: the transposon is cut out of its location and inserted into a new location . This process requires an enzyme a transposase that is encoded within the transposon. Transposase binds to: *both ends of the transposon, which consist of inverted repeats ; that is, identical sequences reading in opposite directions....
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Mwk2W08 - The first transposons were discovered in the...

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