Genetics homework 3

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ethylmethane sulfonate

alkylating agent

order the steps of the methyl-directed mismatch repair system

1. parental strands are marked with methyl groups 2. MutS and MutL recognize mismatch in replicated DNA 3. MutL recruits MutH, which makes a nick opposite the methyl tag 4. DNA exonucleases remove DNA from the new strand 5. the new strand is repaired and methylated

5-Bromo-uracil

base analog

nitrous acid

deaminating agent

the two main mechanisms used to repair DNA double-strand breaks are __________ recombination repair and _________ end-joining

homologous; nonhomologous

hydroxylamine

hydroxylating agent

proflavin

intercalating agent


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