Yuav ua li cas yog ib tug snapdragon piv txwv ntawm tsis tiav dominance?
Yuav ua li cas yog ib tug snapdragon piv txwv ntawm tsis tiav dominance?

Video: Yuav ua li cas yog ib tug snapdragon piv txwv ntawm tsis tiav dominance?

Video: Yuav ua li cas yog ib tug snapdragon piv txwv ntawm tsis tiav dominance?
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Cov paj liab no yog tshwm sim los ntawm tsis tiav dominance . Txawm li cas los xij, sib xyaw cov paj liab ua rau ¼ liab, ¼ dawb thiab ½ liab. Paj yeeb snapdragons yog ib tug tshwm sim ntawm tsis tiav dominance . Hla-pollination ntawm liab snapdragons thiab dawb snapdragons ua rau liab dawb thaum tsis yog dawb lossis liab alleles tseem ceeb.

Tsuas yog li ntawd, koj ua li cas qhia tsis tiav dominance?

Yog tias phenotype yog "liab" ces r allele yog tseem ceeb rau b. Yog tias phenotype yog "xiav" ces b allele yog tseem ceeb rau r. Yog hais tias phenotype yog "liab" ces cov alleles qhia tsis tiav dominance . Yog tias phenotype muaj qee hom hlwb "liab" thiab lwm tus "xiav" ces cov alleles no ua yeeb yam codominance.

Ib sab saum toj no, puas yog Sickle Cell Anemia Ib qho piv txwv ntawm kev ua tiav tsis tiav? Lwm tus Piv txwv ntawm kev tsis tiav dominance yog mob kab mob ntshav qab zib , ib qho kab mob uas cov hemoglobin protein tsim tsis raug thiab cov ntshav liab hlwb muaj a kab mob puab. Ib tug neeg uas yog homozygous recessive rau lub kab mob cell zoo yuav muaj ntshav liab hlwb tias txhua tus muaj cov hemoglobin tsis raug.

Tib neeg kuj nug, yog xim tawv nqaij piv txwv ntawm kev ua tsis tiav?

Tsis tiav dominance tshwm sim nyob rau hauv lub polygenic qub txeeg qub teg ntawm qhov zoo xws li qhov muag xim thiab tawv nqaij xim . 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.

Cov plaub hau wavy puas yog ib qho piv txwv ntawm kev ua tsis tiav?

Cov plaub hau hom yog qhov nthuav dav ntawm ib yam dab tsi hu ua tsis tiav dominance . Qhov no txhais li cas yog nrog plaub hau hom, yog tias koj muaj ib qho ntawm txhua tus qauv ntawm cov noob, koj tau txais kev sib xyaw ntawm ob lossis wavy plaub . Yog li ntawd rau plaub hau hom, CC muab curly , Cs muab wavy thiab ss muab ncaj plaub hau . Rov qab mus rau koj qhov xwm txheej tshwj xeeb.

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