Video: Dab tsi yog qhov tsis tiav dominance hauv noob caj noob ces?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsis tiav dominance yog ib daim ntawv ntawm cov qub txeeg qub teg nyob rau hauv uas ib tug allele rau ib tug tshwj xeeb zoo yog tsis kiag li 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.
Yog li ntawd, dab tsi yog qhov piv txwv ntawm kev ua tsis tiav?
Thaum ib tug niam txiv nrog cov plaub hau ncaj thiab ib tug nrog cov plaub hau curly muaj ib tug me nyuam nrog wavy plaub hau, uas yog ib tug piv txwv ntawm tsis tiav dominance . Qhov muag xim feem ntau raug suav hais tias yog ib qho piv txwv ntawm tsis tiav dominance.
Kuj Paub, qhov txawv ntawm qhov tsis tiav dominance thiab Codominance yog dab tsi? Hauv tsis tiav dominance tus neeg heterozygous sib xyaw ob qhov zoo. Nrog codominance koj yuav pom ob qho alleles qhia lawv cov teebmeem tab sis tsis sib xyaw nrog tsis tiav dominance koj pom ob qho teebmeem alleles tab sis lawv tau muab sib xyaw.
Yog li ntawd, dab tsi yog tag nrho dominance hauv noob caj noob ces?
Ua tiav dominance yog ib daim ntawv ntawm kev tswj hwm nyob rau hauv heterozygous mob nyob rau hauv lub allele uas yog suav hais tias yog tseem ceeb tag nrho npog cov nyhuv ntawm allele uas yog recessive. Piv txwv li, ib tug neeg nqa ob alleles uas yog ob qho tib si tseem ceeb (xws li AA), qhov zoo uas lawv sawv cev yuav raug qhia.
Yuav ua li cas koj hla tsis tiav dominance?
Punnett square rau a ntoo khaub lig nruab nrab ntawm ob heterozygous snapdragons yuav kwv yees cov genotypes RR, Rr, thiab rr hauv qhov sib piv 1: 2: 1, thiab txij li cov alleles tso tawm tsis tiav dominance , cov phenotypes yuav liab, liab thiab dawb nyob rau hauv ib tug 1: 2: 1 piv.
Pom zoo:
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 ua tiav dominance tsis tiav dominance thiab Codominance?
Nyob rau hauv tag nrho dominance, tsuas yog ib tug allele nyob rau hauv lub genotype yog pom nyob rau hauv lub phenotype. Nyob rau hauv codominance, ob alleles nyob rau hauv lub genotype yog pom nyob rau hauv lub phenotype. Nyob rau hauv tsis tiav dominance, ib tug sib tov ntawm alleles nyob rau hauv lub genotype yog pom nyob rau hauv lub phenotype
Yuav ua li cas tsis tiav dominance txawv ntawm Mendelian noob caj noob ces?
Qhov no puas pab tau? Yog · Tsis yog
Dab tsi yog Codominance hauv cov noob caj noob ces tsis yog Mendelian?
Thaum cov alleles rau ib qho kev coj cwj pwm yog codominant, lawv ob leeg qhia sib npaug es tsis yog ib qho tseem ceeb allele noj tag nrho cov kev tswj ntawm ib qho allele recessive. Qhov no txhais tau hais tias thaum lub cev muaj ob qhov sib txawv alleles (piv txwv li, yog heterozygote), nws yuav qhia ob qho tib si tib lub sijhawm