Cov txheej txheem:
Video: Dab tsi yog Codominance hauv cov noob caj noob ces tsis yog Mendelian?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Thaum cov alleles rau ib qho kev zoo tus thawj tswj hwm , lawv ob leeg tau qhia sib npaug es tsis yog ib qho tseem ceeb allele noj kev tswj kom tiav ntawm ib qho allele recessive. Qhov no txhais tau hais tias thaum lub cev muaj ob qho sib txawv alleles (piv txwv li, yog heterozygote), nws yuav qhia ob qho tib si tib lub sijhawm.
Hauv qhov no, dab tsi yog qhov tsis yog Mendelian txoj kev xav ntawm kev qub txeeg qub teg?
Tsis yog - Mendelian qub txeeg qub teg yog tej qauv ntawm qub txeeg qub teg nyob rau hauv uas traits tsis cais raws li Mendel cov kev cai. Cov cai no piav txog qhov qub txeeg qub teg ntawm cov yam ntxwv txuas rau tib cov noob ntawm chromosomes hauv lub nucleus.
Tsis tas li ntawd, qhov txawv ntawm Mendelian noob caj noob ces thiab tsis yog Mendelian noob caj noob ces? Mendelian Cov cwj pwm zoo yog cov yam ntxwv uas tau dhau los ntawm qhov tseem ceeb thiab qhov tsis zoo ntawm ib lub noob. Tsis yog - Mendelian Cov yam ntxwv tsis yog txiav txim siab los ntawm cov tseem ceeb lossis cov khoom lag luam recessive, thiab lawv tuaj yeem koom nrog ntau tshaj ib lub noob.
Nyob rau hauv txoj kev no, dab tsi yog cov piv txwv ntawm tsis yog Mendelian qub txeeg qub teg?
Tsis-Mendelian Inheritance
- Codominance. Lub paj muaj liab thiab dawb petals vim codominance ntawm liab-petal thiab dawb-petal alleles.
- Tsis tiav Dominance. Lub paj muaj paj yeeb vim tsis tiav dominance ntawm liab-petal allele thiab ib tug recessive dawb-petal allele.
- Tib neeg qhov siab.
Dab tsi yog ob hom kev tsis yog Mendelian qub txeeg qub teg?
Feem ntau, thiaj li hu ua tsis yog - Mendelian qub txeeg qub teg tuaj yeem raug ntaus nqi rau qhov nyuaj ntawm cov noob muaj nuj nqi, tsis yog kev sib kis ntawm cov noob. Yog li, tsis tiav penetrance, polygenic qub txeeg qub teg , thiab sib txawv ntawm kev nthuav qhia txhua yam tshwm sim forms tsis - Mendelian qub txeeg qub teg rau thaum ntxov geneticists.
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 qhov tsis tiav dominance hauv noob caj noob ces?
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
Yuav ua li cas tsis tiav dominance txawv ntawm Mendelian noob caj noob ces?
Qhov no puas pab tau? Yog · Tsis yog
Yuav ua li cas cov khoom siv caj ces hauv txhua lub xov tooj tshiab tsim los ntawm kev faib tawm ntawm tes sib piv nrog cov khoom siv caj ces hauv lub xov tooj qub?
Mitosis tshwm sim nyob rau hauv ob lub nuclei uas zoo tib yam rau thawj nucleus. Yog li, ob lub hlwb tshiab tsim tom qab kev faib tawm ntawm tes muaj tib yam khoom siv caj ces. Thaum lub sij hawm mitosis, chromosomes condense los ntawm chromatin. Thaum saib nrog lub microscope, chromosomes pom nyob rau hauv lub nucleus