17. Mutation, Repair, and Recombination
DNA Repair
2:34 minutes
Problem 36c
Textbook Question
Textbook QuestionA geneticist searching for mutations uses the restriction endonucleases SmaI and PvuII to search for mutations that eliminate restriction sites. SmaI will not cleave DNA with CpG methylation. It cleaves DNA at the restriction digestion sequence ↓ 5′−CCC GGG−3′ 3′−GGG CCC−3′ ↑ PvuII is not sensitive to CpG methylation. It cleaves DNA at the restriction sequence ↓ 5′−CAG CTG−3′ 3′−GTC GAC−5′ ↑ What common feature do SmaI and PvuII share that would be useful to a researcher searching for mutations that disrupt restriction digestion?
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