Video: Cov cim ntawm daim ntawv qhia pedigree txhais li cas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A pedigree tshwm sim nyob rau hauv kev nthuav qhia ntawm tsev neeg cov ntaub ntawv nyob rau hauv daim ntawv ntawm ib tug yooj yim nyeem tau daim duab . Pedgrees siv cov txheej txheem txheej txheem cim , squares sawv cev rau txiv neej thiab lub voj voog sawv cev poj niam. Ib tug neeg nrog cov phenotype hauv nqe lus nug yog sawv cev los ntawm kev sau-hauv (tsaus nti) cim.
Kuj paub yog, dab tsi lub voj voog sawv cev ntawm ib tug pedigree?
daim duab qhia txog kev sib raug zoo hauv tsev neeg, yog siv. Hauv ib pedigree , a lub voj voog sawv cev ib tug poj niam, thiab square sawv cev ib tug txiv neej. Ib tug puv-hauv lub voj voog los yog square qhia tau hais tias tus neeg muaj qhov zoo ntawm kev kawm. Kab rov tav uas txuas a lub voj voog thiab ib square sawv cev kev sib yuav.
Ib tug kuj yuav nug, dab tsi yog lub cim pedigree rau ib tug txiv neej muaj mob? Hauv tib neeg caj ces, pedigree Cov duab kos yog siv los txheeb xyuas qhov qub txeeg qub teg ntawm ib qho kev zoo, qhov txawv txav, lossis kab mob . A txiv neej yog sawv cev los ntawm ib lub square lossis lub cim ♂, ib tug poj niam los ntawm lub voj voog lossis lub cim ♀.
Ntawm no, yuav ua li cas tus neeg cuam tshuam tau sawv cev rau ntawm daim ntawv qhia pedigree?
1. Ua kom tiav Penetrance. Ib tus kheej hauv pedigree yuav yog cuam tshuam (qhia cov phenotype txuam nrog qhov zoo) thaum lub tus kheej muaj tsawg kawg yog ib qho tseem ceeb ntawm qhov tseem ceeb ntawm qhov zoo, los yog ob qho tib si recessive alleles ntawm ib qho kev zoo. tiam no tsis yog tus nqa.
Ib nrab sau rau hauv lub voj voog txhais li cas ntawm ib tug pedigree?
A lub voj voog sawv cev rau poj niam. Lub square sawv cev rau ib tug txiv neej. Kab rov tav txuas tus txiv neej thiab poj niam sawv cev rau kev sib yuav. A ib nrab - ntxoov ntxoo lub voj voog los yog square qhia tias ib tug neeg yog tus nqa ntawm qhov zoo. Ib tug kiag li ntxoov ntxoo lub voj voog los yog square qhia tias ib tug neeg qhia qhov zoo.
Pom zoo:
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