2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib tus yam ntxwv polygenic yog ib yam ntxwv, qee zaum peb hu rau lawv phenotypes, uas cuam tshuam los ntawm ntau, ntau yam sib txawv. … Qhov siab ntawm tib neeg yog tswj hwm caj ces muaj zog heev, tab sis muaj ntau, ntau ntau yam noob caj noob ces tswj qhov siab.
Yuav ua li cas yog 3 yam piv txwv ntawm polygenic zoo?
Qee yam piv txwv ntawm cov qub txeeg qub teg polygenic yog: tib neeg cov tawv nqaij thiab qhov muag xim; qhov siab, qhov hnyav thiab kev txawj ntse ntawm tib neeg; thiab kernel xim ntawm nplej.
Puas yog tib neeg phenotypes Mendelian lossis polygenic zoo?
Thaum Mendelian yam ntxwv zoo li cuam tshuam los ntawm ib lub noob, feem coob ntawm tib neeg phenotypes yog polygenic traits. Lo lus polygenic txhais tau tias "ntau cov noob." Yog li ntawd, qhov zoo ntawm polygenic yog cuam tshuam los ntawm ntau cov noob uas ua haujlwm ua ke los tsim cov phenotype.
Dab tsi tib neeg qhov zoo yog polygenic?
Nyob hauv tib neeg, qhov siab, xim tawv nqaij, xim plaub hau, thiab qhov muag ximyog cov piv txwv ntawm cov yam ntxwv zoo. Hom-2 mob ntshav qab zib mellitus, kab mob plawv, mob qog noj ntshav, thiab mob caj dab kuj tseem suav tias yog polygenic. Txawm li cas los xij, cov xwm txheej no tsis yog caj ces vim tias polygenes tuaj yeem cuam tshuam los ntawm ib puag ncig.
Yuav ua li cas yog phenotypic?
A phenotype yog tus neeg tus yam ntxwv pom tau, xws li qhov siab, qhov muag xim, thiab hom ntshav. Cov noob caj noob ces pab rau phenotype yog hu ua genotype. Qee qhov zoo tshaj plaws yog txiav txim siab los ntawm genotype, thaumLwm yam kev zoo yog txiav txim siab los ntawm ib puag ncig.
Pom zoo:
Yuav ua li cas sau phenotypic piv rau dihybrid hla?
This 9:3:3:1 phenotypic piv yog qhov piv txwv ntawm Mendelian classic rau tus ntoo khaub lig dihybrid uas cov alleles ntawm ob hom noob sib txawv ntawm nws tus kheej rau hauv gametes. Daim duab 1: Ib qho piv txwv ntawm Mendelian classic ntawm kev ywj pheej assortment:
Vim li cas phenotypic plasticity tseem ceeb?
Ntau yam kab mob muaj peev xwm nthuav tawm cov phenotypes sib txawv hauv kev teb rau ib puag ncig. Xws li phenotypic plasticity tso cai rau cov kab mob tib neeg los tsim kom tsim nyog morphological, physiological, lossis kev coj cwj pwm zoo uas haum rau ib puag ncig uas lawv ntsib.
Nyob rau hauv cov nqe lus puas siab puas ntsws yog dab tsi echoist trait?
Laj dab neeg luv luv: Tus echoist yog tus neeg ntshai ua rau lwm tus tsis xis nyob. Nws tsis tso tseg li, qhov tseeb yog, lawv tsis xav tsis xis nyob rau lawv tus kheej - siv qhov chaw me me li sai tau - nyiam faus lawv tus kheej txoj kev xav thiab kev xav.
Lub ntsiab lus ntawm polygenic yog dab tsi?
Ib tus yam ntxwv polygenic yog ib tus uas nws cov phenotype cuam tshuam los ntawm ntau dua ib tus noob. Cov yam ntxwv uas qhia txog kev faib tawm tas mus li, xws li qhov siab lossis xim tawv nqaij, yog polygenic. … Ntau yam polygenic tseem cuam tshuam los ntawm ib puag ncig thiab hu ua multifactorial.
Polygenic ua haujlwm li cas?
Polygenic qub txeeg qub teg piav qhia kev qub txeeg qub teg ntawm qhov zoo uas tau txiav txim los ntawm ntau tshaj ib tus noob. Cov noob no, hu ua polygenes, tsim cov yam ntxwv tshwj xeeb thaum lawv qhia ua ke. Polygenic qub txeeg qub teg txawv ntawm Mendelian qub txeeg qub teg, qhov twg qhov zoo yog txiav txim los ntawm ib tug tib noob.
