▁also ▁continue ▁to ▁arise ▁in ▁n ond ivid ing ▁cells , ▁but ▁in ▁this ▁case , ▁the ▁production ▁of ▁recom bin ants ▁continued ▁whether ▁there ▁was ▁selection ▁for ▁them ▁or ▁not . ▁Thus , ▁mut ation ▁occurred ▁in ▁station ary ▁phase ▁only ▁when ▁it ▁was ▁adapt ive , ▁but ▁recom bin ation ▁occurred ▁whether ▁it ▁was ▁adapt ive ▁or ▁not . ▁ ▁Del ay ed ▁appearance ▁of ▁mut ants ▁has ▁also ▁been ▁reported ▁for ▁Cand ida ▁alb icans . ▁With ▁long ▁expos ure ▁to ▁sub le th al ▁concentr ations ▁of ▁heavy ▁met als , ▁colon ies ▁of ▁resist ant ▁cells ▁began ▁to ▁appear ▁after ▁ 5 – 1 0 ▁days ▁and ▁continued ▁to ▁appear ▁for ▁ 1 – 2 ▁weeks ▁there after . ▁These ▁resist ances ▁could ▁have ▁resulted ▁from ▁gene ▁ampl ification , ▁although ▁the ▁phen ot ypes ▁were ▁stable ▁during ▁a ▁short ▁period ▁of ▁non select ive ▁growth . ▁However , ▁revert ants ▁of ▁two ▁aux ot roph ies ▁also ▁appeared ▁with ▁similar ▁k inet ics . ▁None ▁of ▁these ▁events ▁in ▁Cand ida ▁alb icans ▁have , ▁as ▁yet , ▁been ▁shown ▁to ▁be ▁specific ▁to ▁the ▁selection ▁im posed . ▁ ▁References ▁ ▁Category : M ut ation ▁Category : Non - D ar win ian ▁evolution <0x0A> </s> ▁Mount ▁Dum ais ▁is ▁a ▁bl uff - type ▁mountain ▁in ▁Ant arct ica , ▁ ▁high , ▁standing ▁on ▁the ▁south west ▁edge ▁of ▁Mack in ▁Table , ▁ 2 ▁na ut ical ▁miles ▁( 4   km