midah maluleka uthi, "kunekhromozowuni 21 engezelelweko (itrisomy 21) eriyadisa ukukhula komzi mba nengqondo yomuntu.

midah maluleka utsi, "kunelinani lelingetiwe le21 chromosone (itrisomy 21) lelibanga kube nekubambeleleka kweku khula kwemtimba nekwe ngcondvo.
