Purbred txhais li cas hauv alleles?
Purbred txhais li cas hauv alleles?

Video: Purbred txhais li cas hauv alleles?

Video: Purbred txhais li cas hauv alleles?
Video: The Delightful Mutation Behind Siamese Cats 2024, Kaum ib hlis
Anonim

Purebred txhais tau tias uas ob leeg alleles ntawm ib tug gene nyob rau hauv ib tug neeg yog tib yam. Hybrid txhais tau tias tias lawv txawv.

Ntawm no, dab tsi yog purebred allele?

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 zoo (piv txwv li lub cev qhia qhov zoo) rau nws cov xeeb ntxwv ntawm ntau tiam neeg.

purebred txhais li cas hauv Punnett Squares? Heterozygous: Muaj cov ntawv sib txawv. E.g. Tt (txawv alleles rau qhov zoo)? Purebred trait: Kuj hu ua kev yug me nyuam tiag. Cov tib neeg genotype yog homozygous thiab tsuas yog ua ib qho xwb.

Ib yam li ntawd, nws tau nug, qhov txawv ntawm purebred thiab homozygous yog dab tsi?

Yog hais tias ob qho tib si alleles zoo tib 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 tug alleles txawv , cov nroj tsuag tau hais tias yog hybrid lossis heterozygous rau qhov zoo.

Nws txhais li cas los ua ib tsob nroj ntshiab?

Kev yug me nyuam tiag tiag cog yog ib qho uas, thaum nws tus kheej fertilized, tsuas yog tsim cov xeeb ntxwv nrog tib yam. Cov kab mob muaj tseeb yog cov noob caj noob ces zoo ib yam thiab muaj cov alleles zoo tib yam rau cov yam ntxwv tshwj xeeb. Kev yug me nyuam tiag tiag nroj tsuag thiab kab mob tej zaum yuav qhia phenotypes uas yog homozygous dominant los yog homozygous recessive.

Pom zoo: