Heterozygous uye homozygous Utachiona

Chimwe chezvinhu zvinokosha ehupfumi upi mupenyu muviri ndiko nhodzera, runotikurudzira shanduka dzinotsanagura panyika, uyewo kuchengetedza kwemarudzi kusiyana pamusoro payo. Zviduku chairema yedzinza anoita Gene - STRUCTURAL vanzwe DNA Morekuru, basa kuchinjwa mashoko majini chokuita chimwe chinhu muviri. Zvichienderana mwero dzinounzwa rave uye magene recessive. A maitiro chinoratidza hune dzakabatana ndiyo kukwanisa "kudzvinyirira" recessive kungotaurwa kusarudza kuchinja nhengo, kwete achivabvumira kuonekwa muchizvarwa yokutanga. Zvisinei, zvinofanira kucherechedzwa kuti pamwe zvizere akaona kukwana kutonga, umo chikuru Gene usingagoni kudzvinyirira zvachose kutaura recessive superdominance uye kupa kuratidza tsamba zviri muchimiro kwakasimba kupfuura homozygous zvinenge. Zvichienderana majini worudzii allelic (kureva, basa kukura chete chiratidzo) nayo anogamuchira kubva mubereki marudzi, mirai heterozygous uye homozygous zvinenge.

Definition of homozygous muviri

Homozygous zvinenge - zvinonamatwa mhuka, pamwe maviri chete (hukuru kana recessive) Gene chimwe hwaro. A pachena chinoratidza inotevera chizvarwa homozygous vanhu chinhu kushayikwa panguva iyoyo vanhu vavo kufinhwa. Chikonzero ndechokuti kunonyanya kuti homozygous genotype ari nhengo ine chimwe chete mhando gametes, akasarudzwa netsamba guta kana chinhu chikuru unhu, uye zvido zvevanhu kana kureva recessive. Heterozygous zvinenge zvisingapindirani kuti dzine alleles siyana, uye, naizvozvovo, kuumba marudzi maviri akasiyana gametes. Homozygous zvinenge huru recessive alleles zvinogona runotaurwa sezvo AA, BB, aabb, etc. Saizvozvowo, homozygous zvinenge hukuru alleles, vane bumbiro AA, BB, AABB.

mifananidzo nhaka

Achigura maviri heterozygous zvinenge genotypes ringaita conventionally akasarudzwa sezvo AA (usingadikamwi A - nesimba, uye - a recessive Gene), inopa mukana kuwana akaenzana mukana yakasiyana siyana mana gametes (musiyano wezvinyorwa genotype) nokuda kugaya ne 3: 1 phenotype. Pasi genotype muchiitiko ichi kunoreva nhevedzano majini kuti ane diploid akagadzirwa imwe muchitokisi; mumwe phenotype - kwegadziriro nechitarisiko uye munyika zviri nhengo iri mubvunzo.

muchinjikwa Dihybrid uye mamiriro ayo

Funga mitemo chokuita kuberekesana muitiro, raisanganisira homozygous zvinenge. In chete nyaya, kana paine-chemasanganiswa maviri kana poligibridnoe mazambuko, pasinei hunhu heritable unhu, cleavage kuchiitika pane imwe nhamba 3: 1, uye mutemo uyu chinoshanda kuti chero uwandu. Hybridization wechipiri-chizvarwa vanhu iyi anoumba mhando huru ina phenotypes vari MUPARIDZI 9: 3: 3: 1. Zvinokosha kucherechedza kuti mutemo uyu chinoshanda kuti homologous maviri okutodza nekuita majini zvisina kuitwa mukati.