Video: Nws txhais li cas rau cov noob sib txuas?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov noob caj noob ces yog cov noob uas yog zoo li yuav tau txais qub txeeg qub teg vim lawv yog lub cev ze rau ib leeg ntawm tib chromosome. Thaum lub sij hawm meiosis, chromosomes yog recombined, ua rau noob swaps ntawm homologous chromosomes.
Raws li, koj yuav paub li cas yog cov noob txuas?
Koj ua tau qhia yog tias tus noob txuas los ntawm saib cov xeeb ntxwv. Piv txwv li, cia peb hais tias peb yug peb tus niam txiv saum toj no nrog genotype RT / rt rau niam txiv uas yog rt / rt. Yog cov me nyuam yog dawb thiab luv, koj paub thawj niam txiv pab rt. Yog lawv siab thiab liab, koj paub thawj tus niam txiv pab RT.
Kuj Paub, qhov sib txawv ntawm cov noob txuas thiab tsis sib txuas yog dab tsi? Thaum twg noob pom ntawm txawv chromosomes los yog nyob deb sib nrug ntawm tib chromosome, lawv assort ntawm nws tus kheej thiab hais tias yog unlinked . Thaum twg noob nyob ze ua ke ntawm tib chromosome, lawv hais tias txuas.
Khaws qhov no hauv kev txiav txim siab, ua li cas koj sau cov noob txuas?
Peb ib txwm xaiv txuas cov noob ntawm txhua sab hauv tib qho kev txiav txim; nws yeej ib txwm b/a b, yeej tsis b/b a. Txoj cai ntawd noob yeej ib txwm sau nyob rau hauv tib daim ntawv tso cai geneticists siv ib tug luv luv sau nyob rau hauv uas cov qus-hom allele sau nrog ib tug ntxiv kos npe rau ib leeg.
Ib qho piv txwv ntawm kev sib txuas gene yog dab tsi?
Txuas cov noob yog noob uas nyob ntawm tib chromosome. Yog li lawv tau dhau los ua ke, thiab lawv cov phenotypes feem ntau pom ua ke. Ib piv txwv ntawm no yuav yog noob rau cov plaub hau liab thiab freckles, uas koj feem ntau pom ua ke hauv tib neeg.
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 sib txawv ntawm qhov sib txawv ntawm cov kab sib txuas thiab ntau qhov sib piv?
6. (2 lub cim) Qhov sib txawv ntawm cov kab sib txuas (kev sib piv) thiab ntau qhov sib piv yog dab tsi? Cov kab sib xyaw ua ke yog npaj sib piv; uas yog, tshwj xeeb txhais tau tias yog ua ke nyob rau hauv ntau txoj kev thiab contrasted nrog rau lwm yam kev sib txuas ntawm txhais tau tias
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Dab tsi ntawm cov khoom sib txuas sib txuas muaj nyob ntawm cov dej molecules?
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