Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
족외혼은 가족 간의 유전적 다양성을 증가시킬 수 있습니다.jokoehon-eun gajok gan-ui yujeonjeok dayangseong-eul junggasikil su issseubnida.Exogamous marriage can increase genetic diversity among families.