Video: Yuav ua li cas genotype rau mob ntshav qab zib mellitus ib tus neeg yuav muaj tus kab mob malaria?
2024 Tus sau: Michael Samuels | [email protected]. Kawg hloov kho: 2023-12-16 01:44
Sickle cell tus yam ntxwv ( genotype HbAS) confers a high degree of tsis kam mus rau hnyav thiab nyuaj mob malaria [1–4] tseem tsis tau paub meej txog cov txheej txheem.
Ib yam li ntawd, tib neeg nug, vim li cas cov neeg mob ntshav qab zib mob ntshav qab zib tau tiv thaiv kab mob malaria?
Cov neeg txhim kho kab mob - ntawm tes kab mob, ib yam mob uas cov ntshav liab hlwb yog txawv txav, yog tias lawv txais tau ob faulty luam ntawm cov gene rau cov oxygen nqa protein hemoglobin. Lawv cov txiaj ntsig qhia tau tias cov noob tsis tiv thaiv kab mob los ntawm tus mob npaws parasite, raws li tau xav yav tas los.
Tsis tas li ntawd, tus neeg mob mob khaub thuas puas tuaj yeem muaj malaria? Ntawm qhov tsis sib xws, cov tib neeg uas yog tus nqa khoom rau sickle cell kab mob ( nrog ib kab mob noob thiab ib qho qub hemoglobin noob, tseem hu ua qev cell qhov zoo) muaj qee qhov kev tiv thaiv kom zoo dua mob malaria . Yog li ntawd, cov zaus ntawm qev cell cov cab kuj muaj siab nyob rau hauv mob malaria -thaj chaw muaj kab mob.
Yog li, dab tsi yog genotype ntawm sickle cell anemia?
Feem ntau, ib tus neeg tau txais ob daim ntawv theej ntawm cov noob uas tsim cov beta-globin, cov protein uas xav tau los tsim cov hemoglobin ib txwm muaj (hemoglobin A, genotype UA). Ib tug neeg nrog qev cell tus cwj pwm tau txais ib qho qub allele thiab ib qho txawv txav allele encoding hemoglobin S (hemoglobin genotype AS).
Dab tsi yog qhov kev sib txuas ntawm cov kab mob ntawm cov kab mob malaria thiab malaria quizlet?
- Cov neeg muaj ob qev cell alleles muaj evolutionary kom zoo dua vim lawv tsis tau qev cell kab mob los yog kis tau mob malaria . - Cov tib neeg uas muaj ob qho tib si hemoglobin alleles tau txais ob qho tib si qev cell kab mob thiab raug rau mob malaria , yog li cov alleles raug tshem tawm ntawm cov pej xeem.
Pom zoo:
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