Video: Yuav ua li cas yog ib tug snapdragon piv txwv ntawm tsis tiav dominance?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
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.
Pom zoo:
Yuav ua li cas yog ib tug piv txwv ntawm ib tug electron cab kuj?
Raws li cov electrons raug xa mus los ntawm ib lub tshuab nqa hluav taws xob mus rau lwm qhov, lawv lub zog theem qis, thiab lub zog tawm. Cytochromes thiab quinones (xws li coenzyme Q) yog qee qhov piv txwv ntawm cov khoom siv hluav taws xob
Yuav ua li cas yog ib tug piv txwv ntawm cov pejxeem nyob rau hauv ib tug ecosystem?
Cov pejxeem yog ib pawg ntawm tib cov kab mob uas nyob hauv ib cheeb tsam. Qee zaum cov neeg sib txawv nyob hauv tib cheeb tsam. Piv txwv li, nyob rau hauv ib lub hav zoov yuav muaj cov pej xeem ntawm owls, nas thiab ntoo thuv. Ntau haiv neeg nyob hauv tib cheeb tsam hu ua ib lub zej zog
Yuav ua li cas koj paub yog tias nws yog Codominance los yog tsis tiav dominance?
Nyob rau hauv tsis tiav dominance ib tug heterozygous ib tug blends ob yam. Nrog codominance koj yuav pom ob qho tag nrho alleles qhia lawv cov teebmeem tab sis tsis sib xyaw whereas nrog tsis tiav dominance koj pom ob qho tag nrho alleles tab sis lawv tau muab sib xyaw
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 yog ib tug piv txwv ntawm ib tug rational naj npawb uas tsis yog ib tug tag nrho?
Tus lej "rational" yog qhov piv ntawm ob tus lej. Piv txwv li, cov hauv qab no yog cov lej rational, thiab tsis muaj leej twg yog tus lej: 1 / 2. 2 / 3