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Pleiotropy itaj alwaq wa id gene iyyan ikna assahat fal issin meɣ samalan ajjotnen n phenotypic war n orakan Gène wen isaknen magrad ajotnen ən phénotypique eqalan asitawan gène pléiotropique. Amutti daɣ pleiotropic gene addobat ad ikrich assahat fal samalan ajjotnen daɣ alwaq iyyan, fal as gene coding i asuj wa s axdaman izirwan ajjotnen meɣ target tan izlaynen ilanen alxidmat n ismawan olahan  Pleiotropy addobat ad izj in daɣ tikarsiwen ajjotnen izlaynen mucham addobat nat a tan ijjichan chund gene pleiotropy, developmental pleiotropy d selectional pleiotropy Gene pleiotropy itaj alwaq wa id asuj n gene osaɣan id protein tan ajjotnen meɣ idlajan alwazab tan ajjotnen Pleiotropy wan efes itaj alwaq wa id imutiyan ilanat tikmawen ajjotnen fal phenotype id erawan Selectional pleiotropy itaj alwaq wa id phenotype wa id erawan ila tikmawen ajjotnen fal fitness (ilkam i haratan chund awatay d ahalis)  Almital n pleiotropy eqqal phenylketonuria, aɣašad eɣlalan ikman fal iddikud n phenylalanine, amino acid addoben ad izjir daɣ aman daɣ taɣissa n awadim Phenylketonuria eway id amino acid wen a id iw-adan daɣ taɣissa awen addobat ad eqqil a eqqalan a olaɣan Awen eqqal a id eraw id defect daɣ gene iyyan fal chromosome 12 eɣran s enzyme phenylalanine hydroxylase, eqqalan a idasnen sistem tan ajjotnen chund sistem wan eɣaf d sistem wan eɣaf  Alxidmăt tan gene tan win pleiotropic addobat ad aɣil nat iddikud n amutti n multivariate alwaq wa id nefran wan batil, nefran wan tartit meɣ nefran n batil fal samal iyyan eqqal a oharan allele iyyan as ijja awen nefran fal samalan iyyad eqqal a oharan allele iyyad Iyad təwaɗen ən gènetan aqalnen aśohen ye taɣisa. Iharojan n etari d alwazab i nefran alwaq iyyan eqqal almital n pleiotropy