Iyini i-allele?
I - allele iyindlela ehlukile yokulandelana kwe - nucleotide endaweni efanayo kuyi - DNA ende, njengoba kuchazwe ezincwadini eziyinhloko ze - genetics nokuziphendukela kwemvelo.  Igama elithi "Allele" liyisifushaniso segama elithi "allelomorph".  "Indawo ye-chromosomal noma ye-genome yofuzo noma yanoma iyiphi enye ingxenye yofuzo ibizwa ngokuthi i-locus (ubuningi: loci) futhi ukulandelana kwe-DNA okuhlukile ku-locus kubizwa ngokuthi ama-alleles".  Ama-allele alula kakhulu angama-single nucleotide polymorphisms (ama-SNP), kodwa futhi angaba ukufakwa nokususwa okufinyelela ezinkulungwaneni eziningana zamabhangqa e-base.  Izincazelo ezithandwayo zelithi 'i-allele' ngokuvamile zibhekisela kuphela kuma-allele ahlukahlukene ngaphakathi kwezakhi zofuzo. Ngokwesibonelo, ukuhlukaniswa kwegazi kwe-ABO kulawulwa i-ABO gene, ene-alleles (izinguquko) eziyisithupha ezivamile. Ezakhiweni zezakhi zofuzo zabantu, cishe zonke izakhi zofuzo zabantu abaphilayo zezakhi zofuzo ze-ABO ziyinhlanganisela yalezi allele eziyisithupha.  Ama-allele amaningi abonwe enza ushintsho oluncane noma angalwenzi nhlobo emsebenzini womkhiqizo wofuzo owakhodiwe. Kodwa-ke, ngezinye izikhathi, ama-allele ahlukene angaholela ezimfanelweni ezihlukile ze-phenotypic ezibonakalayo, njenge-pigmentation ehlukile. Isibonelo esiphawulekayo salokhu ukutholakala kukaGregor Mendel kokuthi imibala emhlophe nemfusa yezimbali ezitshalweni zepea yayiwumphumela wofuzo olulodwa olunama-allele amabili.  Cishe zonke izinto eziphilayo ezinamangqamuzana amaningi zinamasethi amabili ama-chromosome ngesikhathi esithile emjikelezweni wazo wokuphila; okungukuthi, ziyi-diploid. Kulokhu, ama-chromosome angahlanganiswa. I-chromosome ngayinye ehlanganisiwe iqukethe izakhi zofuzo ezifanayo ngokulandelana kwazo, nendawo yazo, nobude be-chromosome. Uma ama-chromosome amabili equkethe i-allele efanayo, wona kanye ne-organism, angama-homozygous maqondana nalelo gene. Uma ama-allele ehlukile, wona kanye ne-organism, ane-heterozygous ngokuphathelene nalelo jini.