Joanna Mountain and Neil Risch cautioned that while genetic clusters may one day be shown to correspond to phenotypic variations between groups, such assumptions were premature as the relationship between genes and complex traits remains poorly understood.
Joanna Mountain d Neil Rish ardahan as alwaq wa id genetic clusters t addobat achal iyyan ad tilu id phenotypic variations jir taqqimen ,mirda tan chund win arroradan fal as aharoj jir gene tan d samalan maqqornen war ikna at w afham hullan