Dab tsi ua rau penetrance?
Dab tsi ua rau penetrance?

Video: Dab tsi ua rau penetrance?

Video: Dab tsi ua rau penetrance?
Video: Koj lub siab yog dab tsi ua? 8/3/2017 2024, Kaum ib hlis
Anonim

Penetrance hais txog kev faib ua feem ntawm cov neeg uas muaj ib qho kev hloov caj ces (xws li kev hloov pauv hauv ib lub noob caj noob ces) uas pom cov cim thiab cov tsos mob ntawm cov kab mob caj ces. Yog tias qee tus neeg muaj kev hloov pauv tsis tau tsim cov yam ntxwv ntawm qhov tsis sib xws, qhov xwm txheej tau hais tias tau txo qis (lossis tsis tiav) nkag mus.

Yog li ntawd, dab tsi ua rau kev nkag mus tsis tiav?

Kev nkag tsis tiav tej zaum yuav yog vim cov nyhuv ntawm hom kev hloov pauv. Qee qhov kev hloov pauv ntawm tus kab mob muab tuaj yeem ua tiav nkag mus , qhov twg raws li lwm tus hauv tib lub noob qhia tsis tiav los yog tsawg heev nkag mus . Txo kev nkag mus nyob rau hauv qee yam kab mob caj ces kuj tseem nyob ntawm cov keeb kwm ntawm cov noob caj noob ces.

dab tsi yog penetrance thiab nthuav qhia? “Ua tiav” nkag mus txhais tau hais tias cov noob los yog cov noob rau ib qho kev zoo yog qhia nyob rau hauv tag nrho cov pejxeem uas muaj cov noob. Kev nthuav qhia Ntawm qhov tod tes, hais txog kev hloov pauv hauv phenotypic qhia thaum ib qho allele yog nkag mus . Rov qab mus rau qhov piv txwv polydactyly, tus lej ntxiv yuav tshwm sim ntawm ib lossis ntau qhov ntxiv.

Yog li ntawd, dab tsi yog penetrance txhais tau tias nyob rau hauv noob caj noob ces?

Penetrance hauv noob caj noob ces yog qhov kev faib ua feem ntawm cov tib neeg nqa ib qho txawv (los yog allele) ntawm ib tug noob (genotype) uas kuj qhia txog ib qho kev sib raug zoo (phenotype). Cov piv txwv zoo siv los qhia cov qib ntawm penetrance yog feem ntau heev nkag mus.

Yuav ua li cas koj xam penetrance hauv noob caj noob ces?

Crude nkag mus Kev kwv yees tuaj yeem muab tau los ntawm kev faib cov naj npawb ntawm cov kab mob ( nkag mus ) cov tib neeg los ntawm tus lej ntawm cov neeg nqa khoom ua haujlwm ( nkag mus raws li txoj cai uas tsis yog- nkag mus , uas yog, cov tib neeg ib txwm muaj ntau tus xeeb leej xeeb ntxwv lossis cov tib neeg uas muaj kev cuam tshuam rau niam txiv thiab menyuam).

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