Video: Dab tsi chromosome yog tas2r38?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib qho tseem ceeb ntawm cov noob uas ua rau PTC kev xav tau raug txheeb xyuas (Kim li al., 2003). Cov gene ( TAS 2R38 ), nyob rau ntawm chromosome 7q36, yog ib tug tswv cuab ntawm tsev neeg iab saj receptor.
Ib yam li ntawd ib tug yuav nug, ntawm dab tsi chromosome yog tas2r38 noob?
Txij thaum ntawd los, PTC tasting peev xwm tau mapped rau chromosome 7q thiab, ob peb xyoos tom qab, tau qhia ncaj qha rau TAS 2R38 genotype. Muaj peb hom polymorphisms nyob rau hauv TAS 2R38 gene -A49P, V262A, thiab I296V-uas ua ke los ua ob hom haplotypes thiab ob peb lwm yam tsis tshua muaj haplotypes.
Ib yam li ntawd, hom kev sib txuas twg raug lees paub los ntawm tas2r38 receptor? Qhov saj tus neeg txais kev pab noob TAS 2R38 yog iab tus neeg txais kev pab rau thiourea tshuaj sib xyaw phenylthiocarbamide (PTC) thiab 6-n-propylthiouracil (PROP).
Ua raws li qhov xav tau, lub hom phiaj ntawm PTC noob yog dab tsi?
Muaj peev xwm saj PTC feem ntau yog kho raws li tus tseem ceeb caj ces qhov zoo, txawm tias qhov qub txeeg qub teg thiab kev qhia ntawm qhov kev zoo no yog qhov nyuaj dua. PTC kuj inhibits melanogenesis thiab siv los loj hlob pob tshab.
Dab tsi yog lub luag haujlwm dab tsi ntawm cov noob tas2r38 tshwm sim hauv cov khoom qab zib?
Cov iab saj kev xaav (txuas nrog kev muaj peev xwm lossis tsis muaj peev xwm saj phenylthiocarbamide) yog kho los ntawm cov TAS 2R38 gene . Lub siab ntawm iab saj tiv thaiv peb ntawm kev noj tshuaj lom tshuaj , tam sim no nyob rau hauv tej zaub, uas ua tau cuam tshuam rau cov thyroid thaum noj ntau ntau.
Pom zoo:
Dab tsi yog qhov chaw tshwj xeeb ntawm cov noob ntawm chromosome?
Nyob rau hauv cov noob caj noob ces, ib locus (plural loci) yog ib qho tshwj xeeb, qhov chaw ruaj khov ntawm chromosome qhov twg ib qho gene lossis cov cim caj ces nyob
Qhov piv txwv chromosome yog dab tsi?
Npe. Lub ntsiab lus ntawm chromosome yog cov qauv zoo li DNA (nucleic acids thiab proteins) uas nqa cov noob. Cov noob 'X' lossis 'Y' uas txiav txim siab seb koj yuav yog ib tug tub lossis ntxhais yog ib qho piv txwv ntawm chromosome. YourDictionary txhais thiab siv piv txwv
Dab tsi yog tus lej 2n chromosome rau koj karyotype?
Tus lej ntawm cov chromosomes hauv cov hlwb somatic ntawm ib tus neeg lossis ib hom yog hu ua tus lej somatic thiab raug xaiv 2n. Hauv kab kab mob (cov hlwb sib deev) tus lej chromosome yog n (tib neeg: n = 23). Yog li, hauv tib neeg 2n = 46
Dab tsi yog cov noob ntawm Y chromosome?
Hauv cov tsiaj txhu, Y chromosome muaj cov noob, SRY, uas ua rau kev loj hlob ntawm embryonic li txiv neej. Y chromosomes ntawm tib neeg thiab lwm yam tsiaj txhu kuj muaj lwm cov noob uas xav tau rau kev tsim cov phev
Dab tsi yog tus lej chromosome ntawm niam txiv lub hlwb hauv mitosis?
Tom qab mitosis ob lub hlwb zoo tib yam tsim nrog tib tus naj npawb ntawm chromosomes, 46. Haploid hlwb uas tsim los ntawm meiosis, xws li qe thiab phev, tsuas muaj 23 chromosomes, vim hais tias, nco ntsoov, meiosis yog 'txo faib.'