Dab tsi gene mutation ua rau mob mob cell?
Dab tsi gene mutation ua rau mob mob cell?

Video: Dab tsi gene mutation ua rau mob mob cell?

Video: Dab tsi gene mutation ua rau mob mob cell?
Video: The different types of mutations | Biomolecules | MCAT | Khan Academy 2024, Lub Xya hli ntuj
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Mob caj dab kab mob yog ua los ntawm a kev hloov pauv nyob rau hauv hemoglobin-Beta noob pom ntawm chromosome 11. Hemoglobin thauj oxygen los ntawm lub ntsws mus rau lwm qhov hauv lub cev. Ntshav liab hlwb Nrog ib txwm hemoglobin (hemoglobin-A) yog du thiab puag ncig thiab glide los ntawm cov hlab ntsha.

Kuj paub yog, hom kev hloov pauv dab tsi ua rau mob ntshav tsis txaus?

Siav - cell ntshav tsis txaus yog ua los ntawm ib qho taw tes kev hloov pauv nyob rau hauv β-globin saw ntawm hemoglobin, ua rau hydrophilic amino acid glutamic acid los hloov nrog hydrophobic amino acid valine ntawm txoj haujlwm thib rau. Lub β-globin noob muaj nyob rau ntawm caj npab luv ntawm chromosome 11.

Ib yam nkaus, hom ntshav dab tsi ua rau mob qog noj ntshav? Kab mob Hemoglobin SC yog hom kab mob thib ob uas muaj ntau tshaj. Nws tshwm sim thaum koj tau txais Hb C noob los ntawm ib tus niam txiv thiab Hb S noob los ntawm lwm tus. Cov tib neeg nrog Hb SC muaj cov tsos mob zoo ib yam rau cov tib neeg nrog Hb SS. Txawm li cas los xij, cov ntshav ntshav yog mob hnyav dua.

Ib yam li ntawd, koj tuaj yeem nug, puas yog Sickle Cell Anemia yog qhov hloov pauv?

Sickle cell anemia yog qhov tshwm sim ntawm a point kev hloov Kev hloov pauv hauv ib qho nucleotide hauv cov noob rau hemoglobin. Qhov no kev hloov pauv ua rau hemoglobin hauv cov ntshav liab hlwb txhawm rau ua txhaum a kab mob zoo thaum deoxygenated. Cov kab mob -zoo li ntshav hlwb clog nyob rau hauv capillaries, txiav tawm ncig.

Dab tsi ua rau mob hnyav hauv cov kab mob qog ntshav ntshav ntshav?

Sickle cell anemia ( sickle cell kab mob ) yog ib qho mob ntawm cov ntshav ua los ntawm qhov qub txeeg qub teg hemoglobin (cov protein nqa cov pa oxygen hauv cov ntshav liab hlwb ). Qhov txawv txav hemoglobin ua distorted ( mob tshwm nyob rau hauv lub microscope) ntshav liab hlwb.

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