Maintenance of allelic variation can also occur through disruptive or diversifying selection, which favours genotypes that depart from the average in either direction (that is, the opposite of over-dominance), and can result in a bimodal distribution of trait values.
ag-az n amutti n allele addobat ad ej s nefran eɣtasan meɣ assujatan , assofan genotype tan id affal nen edag n ammas daɣ tasdik fuk (awen a anmachrayan id ijiit) tolas addobat ad izjir daɣ bidomal distribution n alqiman n samal