Duba wurin da ke ƙasa sannan ka amsa tambayar daga baya a cikin harshe ɗaya kamar yadda wurin yake:  Hanyar wucewa: A ƙarshen ƙwayoyin halittar halittar jini akwai wasu wurare na musamman na DNA da ake kira telomeres. Babban aikin waɗannan yankuna shine don ba da damar tantanin halitta don yin kwafin ƙarshen chromosome ta amfani da enzyme telomerase, kamar yadda enzymes da ke yin kwafin DNA ba za su iya kwafin ƙarshen ƙarshen 3 na chromosomes ba. Waɗannan ƙwararrun murfin chromosome kuma suna taimakawa wajen kare ƙarshen DNA, kuma suna dakatar da tsarin gyaran DNA a cikin tantanin halitta daga bi da su azaman lalacewar da za a gyara. A cikin ƙwayoyin ɗan adam, telomeres yawanci tsayin DNA ne guda ɗaya wanda ke ƙunshe da dubunnan maimaitawa na jerin TTAGGG mai sauƙi.  Tambaya: Da yawa daga cikin chromosomes ba za a iya kwafa ta DNA ba?
ƙarshen ƙarshen 3 '