BIO 198- Final Exam Guide - Comprehensive Notes for the exam ( 146 pages long!)
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Intragenic reversion - a reversion that occurs through mutation elsewhere in the same gene: second-site reversion (suppressor mutations) - a reversion that occurs through mutation in a different gene. 12. 4 - mutations may be induced by external factors. 12. 5 - repair systems: direct repair - repair of the dna that returns the dna back to wild-type, dna polymerase proofreading and mismatch repair, mismatch repair - a backup repair procedure that catches errors not seen by the. After dna pol is able to synthesize the strand and ligase is able to finish the nick: dna damage signaling systems, p53 is used to regulate the replication of damaged cells and prevent the spread of. After the rad51 and dmc1 join at the trimmed regions and facilitate strand invasion and complementary pairing in the d loop. If two ns or ew cuts there is no recombination; if one and one, there is recombination.