Lub hom phiaj ntawm kev xeem ua kom tiav yog dab tsi?
Lub hom phiaj ntawm kev xeem ua kom tiav yog dab tsi?

Video: Lub hom phiaj ntawm kev xeem ua kom tiav yog dab tsi?

Video: Lub hom phiaj ntawm kev xeem ua kom tiav yog dab tsi?
Video: Lis Yaj Pov : Lub Hom Phiaj 2024, Kaum ib hlis
Anonim

Kev xeem ua kom tiav . Kev ntsuam xyuas ntxiv , kuj hu ua cis-trans xeem hauv genetics, xeem rau kev txiav txim siab seb ob qho kev hloov pauv cuam tshuam nrog ib qho phenotype tshwj xeeb sawv cev rau ob hom sib txawv ntawm tib lub noob (alleles) lossis yog kev hloov pauv ntawm ob lub noob sib txawv.

Ib yam li ntawd, tib neeg nug, qhov kev xeem ua tiav yog dab tsi thiab nws siv rau dab tsi?

A kev xeem ua tiav (qee zaus hu ua "cis-trans" xeem ) tuaj yeem yog siv los kuaj seb qhov kev hloov hauv ob hom yog nyob rau hauv cov noob sib txawv. Ua kom tiav yuav tsis tshwm sim yog tias kev hloov pauv nyob hauv tib lub noob.

Ib yam li ntawd, allelic complementation yog dab tsi? Allelic complementation yog ib nrab lossis tsis tiav ua tiav ntawm mutant alleles ntawm ib tug noob, sawv cev txawv cistrons (saib daim duab. Txhua ntawm ob alleles nyob rau hauv ib heterozygote muaj lwm yam uas tsis yog-overlapping defective polypeptide khoom.

Yog li ntawd, koj ua qhov kev xeem ua kom tiav li cas?

Qhov yooj yim tshaj plaws xeem kom paub qhov txawv ntawm ob txoj hauv kev yog qhov kev xeem ua tiav . Cov xeem yog yooj yim rau ua --- Ob tug mutants hla, thiab F1 raug tshuaj xyuas. Yog tias F1 qhia txog cov tsiaj qus phenotype, peb txiav txim siab txhua qhov kev hloov pauv yog nyob rau hauv ib qho ntawm ob lub noob tau tsim nyog rau cov tsiaj qus phenotype.

Complementation mapping yog dab tsi?

Complementation Mapping . Ua kom tiav yog tus txheej txheem uas 2 kev hloov pauv ntawm cov noob sib txawv ntxiv ib leeg los qhia cov tsiaj qus phenotype ntawm hla tus 2 mutants.

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