Allele ke eng?
Allele ke phetoho ea tatellano e tšoanang ea li-nucleotide sebakeng se le seng molek'huleng e telele ea DNA, joalokaha e hlalositsoe libukeng tse ka sehloohong tsa liphatsa tsa lefutso le tsa ho iphetola ha lintho.  Lentsoe "Allele" ke khutsufatso ea "allelomorph".  "Sebaka sa liphatsa tsa lefutso kapa sa liphatsa tsa lefutso sa lefutso kapa karolo leha e le efe e 'ngoe ea liphatsa tsa lefutso se bitsoa sebaka (bongata: loci)'me ho latellana ha DNA sebakeng se itseng ho bitsoa li-allele".  Li - allele tse bonolo ka ho fetisisa ke li - polymorphism tsa nucleotide e le 'ngoe (SNP), empa li ka boela tsa kenyelletsa le ho hlakola li - pair tse likete tse'maloa.  Litlhaloso tse tloaelehileng tsa 'allele' hangata li bua feela ka li-allele tse fapaneng ka har'a liphatsa tsa lefutso. Ka mohlala, sehlopha sa mali sa ABO se laoloa ke liphatsa tsa lefutso tsa ABO, tse nang le li-allele tse tšeletseng tse tloaelehileng (mefuta). Ho liphatsa tsa lefutso tsa baahi, hoo e ka bang mofuta o mong le o mong oa motho ea phelang oa lefutso la ABO ke motsoako oa li-allele tsena tse tšeletseng feela.  Li-allele tse ngata tse hlokometsoeng li fella ka phetoho e nyenyane kapa ha li fetohe ho hang mosebetsing oa sehlahisoa sa liphatsa tsa lefutso seo li se ngolang. Leha ho le joalo, ka linako tse ling, li-allele tse fapaneng li ka fella ka litšobotsi tse fapaneng tsa phenotypic tse ka bonoang, tse kang pigmentation e fapaneng. Mohlala o hlokomelehang oa sena ke ho sibolloa ha Gregor Mendel ha mebala e tšoeu le e pherese ea lipalesa limela tsa pea e ne e le phello ea lefutso le le leng le nang le li-allele tse peli.  Hoo e batlang e le lintho tsohle tse phelang tse nang le lisele tse ngata li na le lihlopha tse peli tsa li-chromosome ka nako e 'ngoe bophelong ba tsona ba tlhaho; ke hore, li diploid. Tabeng ena, li-chromosome li ka kopanngoa. Chromosome e 'ngoe le e 'ngoe e kopaneng e na le liphatsa tsa lefutso tse tšoanang ka tatellano e tšoanang, le sebakeng se le seng, ho pholletsa le bolelele ba chromosome. Ha ho fanoa ka liphatsa tsa lefutso, haeba li - chromosome tse peli li e - na le allele e le 'ngoe, tsona hammoho le'mele li na le mofuta o tšoanang oa liphatsa tsa lefutso. Haeba li-allele li fapane, tsona le sebōpuoa li na le li-heterozygous mabapi le liphatsa tseo tsa lefutso.