Homeotic mutations yog dab tsi?
Homeotic mutations yog dab tsi?

Video: Homeotic mutations yog dab tsi?

Video: Homeotic mutations yog dab tsi?
Video: Homeotic genes 2024, Kaum ib hlis
Anonim

Homeotic noob. Kev hloov pauv hauv homeotic Cov noob caj noob ces ua rau lub cev hloov chaw (homeosis), xws li antennae loj hlob nyob rau tom qab ntawm yoov es tsis txhob ntawm lub taub hau. Kev hloov pauv uas ua rau kev loj hlob ntawm cov qauv ectopic feem ntau yog tuag taus.

Qhov sib thooj, Homeotic txhais li cas?

Txhais ntawm homeotic .: Hais txog, tshwm sim los ntawm, los yog yog ib tug gene ua ib tug feem ntau loj hloov nyob rau hauv txoj kev loj hlob txoj hmoo ntawm lub cev los yog lub cev ib feem.

Tsis tas li ntawd, dab tsi yog qhov homeotic mutant quizlet? kev hloov pauv hauv tsev . kev hloov pauv nyob rau hauv uas pom tau hais tias ib txwm lub cev los yog lub cev ib feem tsim nyob rau hauv ib qho chaw tsis tsim nyog. bithorax kev hloov pauv : thib ob txheej tis es tsis txhob halters.

Tom qab, lo lus nug yog, Homeotic transformations yog dab tsi?

Hauv evolutionary txoj kev loj hlob biology, homeosis yog tus kev hloov pauv ntawm ib lub cev mus rau lwm qhov, tshwm sim los ntawm kev hloov pauv hauv lossis misexpression ntawm qee yam kev loj hlob tseem ceeb, tshwj xeeb homeotic noob. Homeotic kev hloov pauv ua haujlwm los ntawm kev hloov ntu tus kheej thaum tsim kho.

Dab tsi yog homeotic mutant nyob rau hauv cov nroj tsuag?

Qhov no hu ua kev hloov pauv hauv tsev , uas yog analogous rau HOX noob kev hloov pauv pom hauv Drosophila. Hauv cov no cov mutants , xws li APETALA2 nyob rau hauv A. thaliana, carpels tsim es tsis txhob ntawm sepals thiab stamens nyob rau hauv qhov chaw ntawm petals. Qhov no txhais tau hais tias, lub verticils ntawm perianth yog hloov mus rau hauv kev ua me nyuam verticils.

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