Cov txheej txheem:
Video: Dab tsi yog hom recombination?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Tsawg kawg yog plaub hom ntawm naturally tshwm sim recombination tau raug txheeb xyuas nyob rau hauv cov kab mob nyob: (1) General los yog homologous recombination , (2) Tsis raug cai lossis tsis yog homologous recombination , (3) Qhov chaw tshwj xeeb recombination , thiab (4) replicativ recombination.
Hauv qhov no, peb hom kev sib txuas ua ke yog dab tsi?
Cov txheej txheem no tshwm sim nyob rau hauv peb txoj kev loj:
- Kev hloov pauv,
- Transduction, thiab.
- Conjugation.
Ib sab saum toj no, dab tsi yog ob hom kev sib txuas ntawm caj ces hauv meiosis? Hauv meiosis thiab mob mitosis , recombination tshwm sim ntawm zoo li molecules ntawm DNA (homologous sequences). Hauv meiosis , non-viv ncaus homologous chromosomes ua ke nrog ib leeg recombination yam ntxwv tshwm sim ntawm cov uas tsis yog-viv ncaus homologues.
Ua kom pom qhov no, dab tsi yog hom recombinant?
Ob hom ntawm gametes yog ua tau thaum ua raws cov noob ntawm tib chromosomes. Yog tias hla dhau tsis tshwm sim, cov khoom yog niam txiv gametes. Yog tias hla dhau tshwm sim, cov khoom yog recombinant gametes.
Yuav ua li cas yog ib qho piv txwv ntawm genetic recombination?
General los yog homologous recombination tshwm sim ntawm DNA molecules ntawm ib ntu zoo sib xws, xws li homologous chromosomes hauv cov kab mob diploid. Zoo piv txwv yog cov kab ke rau kev koom ua ke ntawm qee cov kab mob bacteriophage, xws li l, rau hauv cov kab mob chromosome thiab kev hloov kho ntawm immunoglobulin. noob nyob rau hauv cov tsiaj vertebrate.
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