01:119:140 Study Guide - Dna Ligase, Dna Replication, Function Type

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Dn a dam age: fo rm ation of thym ine dim ers (sl ide 21) R e view : thymine d imme rs are py rimid ine d ime rs. Dna fo rmatio n: xidat io n: fre e rad ica ls. Ox id at ive stre ss can cause dna damage . Th is w o uld be co ntin uo usly rep licated and e ventua lly yo u"ll se e t:a pa irs inste ad o f g:c pa irs. Quest ion-answer seg me nt: x rays are ve ry stro ng h igh ene rgy rad iat io n that can bre ak the d na do uble strand fo rms. De a minat ing agents can ch ange the b ase and cause the trans it io n but w o n"t bre ak the do ub le strand.