Yuav ua li cas muaj ntau yam genotypes muaj peev xwm rau lub tsho tiv no Xim nyob rau hauv luav?
Yuav ua li cas muaj ntau yam genotypes muaj peev xwm rau lub tsho tiv no Xim nyob rau hauv luav?

Video: Yuav ua li cas muaj ntau yam genotypes muaj peev xwm rau lub tsho tiv no Xim nyob rau hauv luav?

Video: Yuav ua li cas muaj ntau yam genotypes muaj peev xwm rau lub tsho tiv no Xim nyob rau hauv luav?
Video: Muaj tsis ntshai tuag 7/1/2018 2024, Kaum ib hlis
Anonim

Plaub txawv alleles muaj rau lub tsho tiv no xim (C) noob.

Ib yam li ntawd, koj tuaj yeem nug, muaj pes tsawg tus genotypes ua tau rau tus luav nrog cov xim grey tag nrho?

Lub tsho tiv no xim hauv luav yog nyob rau hauv tus tswj ntawm ib lub noob nrog plaub alleles: C ( xim grey tag nrho );

Kuj Paub, dab tsi genotypes ua tau rau ib tug luav nrog plaub? Txij li qhov chaw muaj ob lub noob, muaj 4 qhov ua tau ntawm qhov chaw no: BB, bb, Bb, bB. Txij li thaum dub yog kiag li dominant, yog hais tias koj muaj ib tug luav uas muaj tsawg kawg ib B ntawm qhov chaw no, tus luav yuav muaj dub hauv nws plaub . Yog li, luav muaj tus Kev sib xyaw ntawm cov noob: BB, Bb, lossis bB yuav muaj xim dub hauv nws plaub.

Tsis tas li ntawd, yuav ua li cas luav muaj ntau dua ob lub tsho sib txawv?

Luav tuaj yeem muaj ntau txawv lub tsho tiv no xim vim lawv muaj ntau alleles rau lub tsho tiv no xim . Qhov no tsis tshua muaj vim xim qhov muag tsis pom tsuas yog pom nyob rau hauv x noob thiab ib tug poj niam muaj 2 x noob, yog li yog tias ib qho ntawm nws x noob muaj qhov tsis zoo nws muaj feem zoo dua ntawm nws lwm x noob tau ua tus thawj thiab overriding nws.

Dab tsi yog qhov tseem ceeb plaub xim hauv luav?

Agouti coloration yog tseem ceeb . Nws tsuas yog siv 1 agouti noob los tsim Agouti luav vim gene tseem ceeb . Cov xim dub tawv yog qhov tsis zoo (tseem hu ua 'tus kheej' xim ). Kom muaj lub tsho dub, lub luav yuav tsum tau txais ob lub noob qoob loo-xim xim, ib qho los ntawm ob niam txiv.

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