Qhov sib txawv tseem ceeb ntawm codominance thiab tsis tiav dominance yog raws li kev qhia ntawm tus cwj pwm hauv cov xeeb ntxwv. Hauv Codominance, cov xeeb ntxwv tau txais kev sib koom ua ke ntawm ob niam txiv genes, whereas, incomplete dominance, tsis yog ib tug niam txiv genes qhia.
Nyob rau hauv noob caj noob ces, Gregor Mendel nrhiav tau tus Thawj Tswj Hwm ntawm Dominance. Tab sis, nws tau pom tias qhov qub txeeg qub teg ntawm qhov zoo tshwm sim vim yog lwm cov qauv uas tsis yog Mendelian ib yam nkaus. Codominance thiab Incomplete Dominance yog ob qhov tshwm sim uas sib txawv ntawm Mendelian Genetics. Codominance yog qhov tshwm sim uas cov xeeb ntxwv tau txais ob qho tib si niam txiv genes ua ke ntawm ob lub noob. Yog li, ob lub noob qhia sib npaug hauv cov xeeb ntxwv. Nyob rau hauv sib piv, tsis tiav dominance yog qhov tshwm sim uas tsis yog ib tug ntawm cov niam txiv genes qhia, es tsis txhob qhia phenotype, uas muaj ib tug ua ke nyhuv ntawm ob genes.
Codominance yog dab tsi?
Codominance yog tus qauv uas tsis yog Mendelian qub txeeg qub teg. Hauv qhov tshwm sim no, cov xeeb ntxwv qhia txog kev sib raug zoo nrog niam txiv-progeny. Hauv Codominance, cov xeeb ntxwv tau txais ob niam txiv noob hauv qhov sib npaug. Ob qho tseem ceeb thiab cov recessive alleles yog sib npaug ntawm cov xeeb ntxwv. Yog li, cov alleles ib txhij qhia nyob rau hauv codominance. Hauv codominance, kev ywj pheej ntawm alleles tshwm sim, li no, tsis muaj kev sib xyaw ntawm alleles thaum lub sij hawm codominance. Tsis tas li ntawd, kuj tsis muaj qhov cuam tshuam ntau rau Codominance.
Daim duab 01: Tabby Cat
Cov piv txwv classic ntawm Codominance yog qhov piv txwv ntawm tabby miv. Thaum cov miv dub dawb huv thiab cov miv xim av ua ke nrog ib leeg, 1 stfilial tiam yuav muaj cov menyuam miv uas yog xim dub thiab muaj kab txaij xim av lossis pob los yog lwm yam. Cov kittens no yog cov miv tabby. Codominance kuj tuaj yeem saib ntawm Shorthorn nyuj.
Dab tsi yog qhov ua tsis tiav?
Tsis tiav Dominance yog tus qauv uas tsis yog Mendelian qub txeeg qub teg. Nyob rau hauv cov qauv ntawm kev qub txeeg qub teg no, cov xeeb ntxwv tau txais ib qho kev sib raug zoo nruab nrab uas yog kev sib txuas ntawm niam txiv cov noob los yog niam txiv alleles. Yog li ntawd, qhov kev qhia ntawm alleles nyob rau hauv cov xeeb ntxwv yog tsis tseem ceeb los yog recessive. Qhov kev qhia lub cev zoo yog ib qho kev coj tus cwj pwm nruab nrab uas tsis muaj nyob hauv niam txiv. Yog li nws yog ib qho phenotype tag nrho. Yog li ntawd, lub allele qhia yog ntawm nws tus kheej. Yog li ntawd, qhov ua tsis tiav qhov tseem ceeb ntawm allele tuaj yeem suav tau.
Daim duab 02: Mirabilis jalapa
Qhov piv txwv classic ntawm Mirabilis jalapa paj xim. Thaum cov paj liab tag nrho hla nrog cov paj dawb, qhov tshwm sim progeny muaj cov paj liab. Qhov no qhia txog qhov tshwm sim ntawm kev ua tsis tiav.
Dab tsi yog qhov zoo sib xws ntawm Codominance thiab Incomplete Dominance?
- Ob leeg koom nrog cov qauv uas tsis yog Mendelian qub txeeg qub teg.
- Nyob rau hauv ob qhov xwm txheej, tsis muaj qhov tseem ceeb lossis qhov tsis txaus ntseeg tau qhia.
Qhov txawv ntawm Kev Codominance thiab Tsis tiav Dominance yog dab tsi?
Kev tswj hwm thiab kev ua tsis tiav yog ob yam tsis yog Mendelian qub txeeg qub teg. Hauv codominance, cov xeeb ntxwv tau txais kev sib xyaw ntawm cov yam ntxwv ntawm ob niam txiv cov noob tsis hais txog cov noob tseem ceeb thiab cov noob qoob loo. Nyob rau hauv tsis tiav dominance, nws tsim ib tug sib tov ntawm ob alleles nyob rau hauv cov me nyuam. Qhov no yog qhov sib txawv loj ntawm codominance thiab tsis tiav dominance. Ntxiv qhov sib txawv ntawm codominance thiab tsis tiav dominance yog tias cov nyhuv tsis tuaj yeem suav nrog hauv codominance thaum nws tuaj yeem suav rau hauv qhov tsis tiav dominance.
Cov lus qhia hauv qab no ntawm qhov sib txawv ntawm codominance thiab tsis tiav dominance qhia ntau qhov sib txawv ntawm ob tus qauv uas tsis yog Mendelian qub txeeg qub teg.
Summary – Codominance vs Incomplete Dominance
Kev tswj hwm thiab tsis tiav yog ob yam tsis yog Mendelian qub txeeg qub teg. Codominance yog qhov tshwm sim uas ob leeg niam txiv alleles qhia hauv cov xeeb ntxwv hauv qhov tsis sib xws. Nyob rau hauv sib piv, Incomplete dominance yog qhov tshwm sim uas ib nrab ntawm ob niam txiv alleles qhia nyob rau hauv progeny. Yog li, phenotype ntawm kev ua tsis tiav dominance yog tshwj xeeb rau cov menyuam yaus. Cov nyhuv codominant tsis yog quantifiable, whereas qhov tsis tiav dominant nyhuv yuav quantified. Qhov no qhia txog qhov sib txawv ntawm codominance thiab tsis tiav dominance.
