Video: Dab tsi yog qhov zoo ntawm noob caj noob ces?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev kho mob txhais ntawm Yam ntxwv
Cim: Nyob rau hauv noob caj noob ces , a qhov zoo hais txog txhua yam kev txiav txim ntawm caj ces. Ib tug tseem ceeb tuag qhov zoo yog a qhov zoo uas yog qhia yog muaj nyob rau hauv lub genome thiab yog li ntawd precludes muaj xeeb leej xeeb ntxwv
Nyob rau hauv no hais txog, dab tsi yog lub ntsiab txhais ntawm kev zoo nyob rau hauv noob caj noob ces?
Txhais . 'npe, singular: qhov zoo '' ( noob caj noob ces ) Cov yam ntxwv lossis cov yam ntxwv ntawm lub cev uas qhia los ntawm noob thiab/los yog cuam tshuam los ntawm ib puag ncig. Ntxiv. Cov yam ntxwv suav nrog cov yam ntxwv ntawm lub cev xws li cov plaub hau xim, nplooj nplooj, qhov loj me, thiab lwm yam, thiab cov yam ntxwv ntawm tus cwj pwm, xws li noog zes.
Tsis tas li ntawd, dab tsi yog qee yam caj ces? Koj qhov genotype (DNA) txiav txim qhov tseeb yam ntxwv uas koj muaj (hu ua phenotype); xws li qhov muag xim, ze ze, thiab seb koj puas muaj dimples.
Tsis tas li ntawd, ib qho piv txwv ntawm qhov zoo yog dab tsi?
Cim Piv txwv . Txhua tus muaj tus cwj pwm yam ntxwv , ob qho tib si zoo thiab phem, suav nrog peb cov neeg nyiam tshaj plaws. Cim yam ntxwv feem ntau sau nrog cov lus piav qhia xws li tus neeg mob, tsis ncaj ncees, lossis khib. Feem ntau, ib tug neeg tus cwj pwm thiab tus cwj pwm yog intertwined.
Puas yog genetic?
Yam ntxwv : Hauv noob caj noob ces , a qhov zoo hais txog txhua yam kev txiav txim ntawm caj ces. Hauv cov ntsiab lus technical, a noob caj noob ces yog amenable rau segregation tsom xam es tsis yog quantitative tsom xam. Ib tug tseem ceeb tuag qhov zoo yog a qhov zoo uas yog qhia yog muaj nyob rau hauv lub genome thiab yog li precludes muaj xeeb leej xeeb ntxwv.
Pom zoo:
Dab tsi yog qhov tseem ceeb ntawm cov noob caj noob ces rau kev loj hlob ntawm fetal?
Kev soj ntsuam ntawm lub luag haujlwm ntawm chromosomes hauv tib neeg txoj kev loj hlob thiab kev loj hlob ntawm lub fetus tau mob siab rau qhov txawv txav ntawm chromosomal. Cov noob muaj cov lus qhia rau kev loj hlob thiab kev loj hlob. Qee qhov kev hloov gene ua rau cov gene faulty kom cov lus nyeem tsis raug lossis tsis nyeem tag nrho los ntawm lub xovtooj ntawm tes
Dab tsi yog txhais los ntawm cov noob tseem ceeb thiab cov noob caj noob ces?
(Nyob rau hauv cov ntsiab lus ntawm caj ces, ib qho tseem ceeb tshaj plaws yog ib qho uas yog phenotypically qhia hauv heterozygotes). Ib qho tseem ceeb tshaj plaws yog tawm tsam qhov tsis zoo uas tshwm sim tsuas yog thaum muaj ob daim ntawv theej ntawm cov noob. (Nyob rau hauv cov ntsiab lus genetic, ib tug recessive zoo yog ib tug uas yog phenotypically qhia tsuas yog nyob rau hauv homozygotes)
Dab tsi yog qhov kev kuaj hla hauv cov noob caj noob ces?
Nyob rau hauv cov noob caj noob ces, ib qho kev sim hla, thawj zaug qhia los ntawm Gregor Mendel, koom nrog kev yug me nyuam ntawm ib tus neeg nrog phenotypically recessive tus neeg, txhawm rau txiav txim siab zygosity ntawm yav dhau los los ntawm kev txheeb xyuas qhov feem ntawm cov xeeb ntxwv phenotypes. Zygosity tuaj yeem yog heterozygous lossis homozygous
Dab tsi yog qhov txawv ntawm kev xaiv khoom tsim thiab kev tsim noob caj noob ces?
Artificial xaiv xaiv rau cov yam ntxwv uas twb muaj nyob rau hauv ib hom, whereas genetic engineering tsim cov yam ntxwv tshiab. Hauv kev xaiv dag, cov kws tshawb fawb yug tsuas yog cov tib neeg uas xav tau qhov zoo. Los ntawm kev xaiv kev yug me nyuam, cov kws tshawb fawb muaj peev xwm hloov cov cwj pwm hauv cov neeg. Evolution tau tshwm sim
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Incomplete dominance yog ib daim ntawv ntawm cov qub txeeg qub teg hauv nruab nrab uas ib qho allele rau ib qho tshwj xeeb tsis qhia tag nrho nws cov khub allele. Qhov no tshwm sim nyob rau hauv ib tug thib peb phenotype nyob rau hauv uas qhia lub cev zoo yog ib tug ua ke ntawm cov phenotypes ntawm ob alleles