Addinat ilanat immik n homologous d awa eqqalan anuzgum?
Addinat ilan 22 n ichikilan olaɣnen daɣ anmizlay n 23 n ichikilan addobat nen anmizlay 23 Paird kod tan i anmizlay tolas war ilkem ad aqqilan anmillal 21e tartit taqal tartit ta tigat alwaqqan iyad ta tis karadat ta taganen syndrome wan Down.