Dab tsi yog qhov zoo ntawm purebred?
Dab tsi yog qhov zoo ntawm purebred?

Video: Dab tsi yog qhov zoo ntawm purebred?

Video: Dab tsi yog qhov zoo ntawm purebred?
Video: Paj Huab Vaj - Qhov Ntawm No Yog Dab Tsi (Official Music Video) NEW SONG 2024, Kaum ib hlis
Anonim

Ib yam kabmob uas muaj tseeb, qee zaum kuj hu ua a purebred , yog ib yam kab mob uas ib txwm dhau los ntawm qee yam phenotypic yam ntxwv (piv txwv li qhia lub cev yam ntxwv ) rau nws cov xeeb ntxwv ntawm ntau tiam neeg. Hauv ib purebred strain los yog yug me nyuam, lub hom phiaj yog tias cov kab mob yuav "tso muaj tseeb" rau cov yug me nyuam yam ntxwv.

Ib yam li ntawd, nws txhais li cas los ua purebred hauv noob caj noob ces?

A purebred hais txog cov xeeb ntxwv uas tshwm sim los ntawm kev yug me nyuam tiag tiag. Kev yug me nyuam tiag tiag yog ib txoj hauv kev los tsim cov xeeb ntxwv uas yuav nqa tib yam phenotype li cov niam txiv. Yog li ntawd, a purebred yuav tshwm sim thaum cov niam txiv yog homozygous rau tej yam zoo. Kev yug me nyuam tiag tiag yuav txwv cov gene pas.

Tsis tas li ntawd, qhov zoo nkauj ntshiab bred li cas? Muaj tseeb yug me nyuam txhais tau hais tias cov niam txiv kuj yuav dhau ib qho phenotypic qhov zoo rau lawv cov xeeb ntxwv. Muaj tseeb bred kab mob yuav muaj ib dawb huv genotype (genetic expression of a qhov zoo ) thiab tsuas yog yuav tsim ib qho phenotype. Muaj tseeb bred qee zaum kuj hu ua ntshiab bred.

Cov neeg kuj nug, dab tsi yog ib tug purebred?

Purebred yog cov tsiaj uas tau yug los purebred raws li txoj cai los ntawm kev siv cov ntshav tag nrho los hla nrog ib tug tsiaj ntawm lwm hom. Lub koom haum breeders txiav txim qhov feem pua ntawm cov ntshav cov noob caj noob ces yuav tsum muaj rau tus tsiaj suav tias yog purebred , feem ntau yog siab dua 87.5%.

Puas yog Purebred tib yam li homozygous?

Yog tias ob qho alleles zoo ib yam, lub cev tau hais tias yog homozygous rau qhov zoo. Ib yam li ntawd, a purebred luv nroj tsuag muaj ob luv alleles thiab hais tias yuav homozygous luv. Yog hais tias ob qho alleles txawv, cov nroj tsuag tau hais tias yog hybrid lossis heterozygous rau qhov zoo.

Pom zoo: