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Module 3.1 · Topic 6
Module 3.1 · Topic 6
A mutation with no new letters at all
Every mutation you've likely pictured changes a letter — a base substituted, deleted, or added. Barbara McClintock discovered a stranger kind of genetic change in the 1940s: a piece of DNA that simply relocates, verbatim, from one place in the genome to another. Nothing about its sequence changes at all — just where it sits.
A transposable element inserts itself into the middle of a gene's coding sequence. What's the most likely consequence for that gene?
A transposable element inserting into a gene's coding region most typically results in:
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