Video: Dab tsi ua rau HLA?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Lub xub ntiag ntawm HLA -B27 cuam tshuam nrog qee yam kab mob autoimmune thiab tiv thaiv kab mob, suav nrog: ankylosing spondylitis, uas ua rau o ntawm cov pob txha hauv koj tus txha nqaj qaum. reactive mob caj dab, uas ua rau o ntawm koj pob qij txha, urethra, thiab ob lub qhov muag, thiab qee zaum qhov txhab ntawm koj daim tawv nqaij.
Ua raws li qhov no hauv kev txiav txim siab, koj yuav tsim HLA cov tshuaj tiv thaiv li cas?
Tib neeg leukocyte antigen tshuaj tiv thaiv feem ntau txhim kho nyob rau hauv kev sib raug zoo nrog rau qhov tsis yog tus kheej HLA molecules xws li cov khoom siv ntshav, cov ntaub so ntswg txawv teb chaws thaum hloov pauv lossis thaum cev xeeb tub, tab sis lawv tuaj yeem ua tau txhim kho tus kheej.
Ib yam li ntawd, HLA yam yog dab tsi? Tib neeg leukocyte antigen ( HLA ) system los yog complex yog ib tug gene complex encoding lub loj histocompatibility complex (MHC) proteins nyob rau hauv tib neeg. Cov proteins encoded los ntawm qee cov noob tseem hu ua antigens, vim lawv qhov kev tshawb pom keeb kwm zoo li yam hauv kev hloov hauv nruab nrog cev.
Ua li no, nws txhais li cas los kuaj qhov zoo rau HLA?
A zoo tshwm sim txhais tau tias HLA -B27 tau pom hauv koj cov ntshav. Tej zaum koj yuav muaj kev pheej hmoo siab dua ntawm qee yam kab mob autoimmune, xws li ankylosing spondylitis thiab reactive arthritis. Yog tias koj yog neeg dawb, koj yuav muaj feem ntau dua kuaj qhov zoo rau cov HLA -B27 antigens.
Puas yog txhua tus muaj HLA?
Tib neeg muaj peb lub ntsiab MHC chav kawm I noob, hu ua HLA -A, HLA -B, thiab HLA -C. Cov proteins uas tsim los ntawm cov noob no muaj nyob rau saum npoo ntawm yuav luag txhua lub hlwb.
Pom zoo:
Dab tsi ua rau kev hla dhau?
Kev Hla Hla Hla yog qhov sib pauv ntawm cov khoom siv caj ces uas tshwm sim hauv kab kab mob. Thaum lub sij hawm tsim cov qe thiab cov phev hlwb, tseem hu ua meiosis, ua ke chromosomes los ntawm txhua tus niam txiv sib dhos kom cov DNA zoo sib xws los ntawm cov khub chromosomes hla ib leeg
Yuav hais li cas txog peb qhov kev xeem hla hla?
Peb-point Testcross. Hauv kev txheeb xyuas kev sib txuas, peb lub ntsiab lus testcross yog hais txog kev txheeb xyuas qhov qub txeeg qub teg ntawm 3 alleles los ntawm kev sim hla ib qho triple heterozygote nrog triple recessive homozygote. Nws ua rau peb txiav txim siab qhov kev ncua deb ntawm 3 alleles thiab qhov kev txiav txim uas lawv nyob ntawm chromosome
Tus qauv rau thaj tsam ntawm kev hla ntu yog dab tsi?
Hla-Sectional Area of a Rectangular Solid Lub ntim ntawm cov khoom duab plaub, suav nrog lub voos xwmfab, yog thaj tsam ntawm nws lub hauv paus (ntev dav dav) muab faib los ntawm nws qhov siab: V = l × w × h. Yog li ntawd, yog hais tias ib tug ntoo khaub lig seem yog parallel mus rau sab saum toj los yog hauv qab ntawm cov khoom, lub cheeb tsam ntawm tus ntoo khaub lig-section yog l × w
Dab tsi genotype yog siv nyob rau hauv kev sim hla?
Test crosses yog siv los kuaj ib tus neeg lub genotype los ntawm kev hla nws nrog ib tus neeg paub txog genotype. Cov tib neeg uas qhia txog cov phenotype recessive yog paub tias muaj homozygous recessive genotype. Cov tib neeg uas qhia qhov tseem ceeb phenotype, txawm li cas los xij, tej zaum yuav yog homozygous dominant lossis heterozygous
Dab tsi ua rau tsis sib xws hla dhau quizlet?
Ib qho chromosome abnormality tshwm sim los ntawm rearrangement ntawm qhov chaw ntawm nonhomologous chromosomes. Lawv tuaj yeem sib npaug lossis tsis sib npaug. Nws yog qhov sib txawv ntawm kev tshem tawm thiab kuj tshwm sim los ntawm ib qho kev tshwm sim hu ua tsis sib xws hla-dhau uas tshwm sim thaum lub sij hawm meiosis ntawm misaligned homologous chromosomes