Cov txheej txheem:
- Cov ntsiab lus hauv cov teeb no (14)
- Cov no yog ecological, lub cev nqaij daim tawv, kev coj cwj pwm, mechanical / tshuaj thiab thaj chaw
Video: Hom kev tiv thaiv kev xeeb tub yog dab tsi?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Cov no suav nrog lub sijhawm ntev muab cais nyob ib leeg , ecological muab cais nyob ib leeg , kev coj cwj pwm muab cais nyob ib leeg , thiab mechanical muab cais nyob ib leeg . Tom qab zygotic kev thaiv : kev thaiv uas tuaj ua si tom qab ob hom tau sib deev. Cov no suav nrog genetic incompatibility, zygotic mortality, hybrid inviability, hybrid sterility, thiab hybrid breakdown.
Hais txog qhov no, dab tsi yog 2 pawg ntawm kev tiv thaiv kev xeeb tub?
Muaj ob qhov kev faib loj ntawm kev thaiv rau kev yug me nyuam : ua ntej zygotic kev thaiv thiab post-zygotic kev thaiv . Pre-zygotic kev thaiv tiv thaiv hybridization ua ntej fertilization thiab post-zygotic kev thaiv tiv thaiv nws tom qab fertilization.
Qhov thib ob, peb hom Postzygotic teeb meem yog dab tsi? Prezygotic mechanisms suav nrog kev nyob cais , mating seasons, "mechanical" muab cais nyob ib leeg , gamete muab cais nyob ib leeg thiab coj cwj pwm muab cais nyob ib leeg . Postzygotic mechanisms suav nrog hybrid inviability , hybrid sterility thiab hybrid "kev tawg." Hauv evolution, ib lub ntsiab lus tseem ceeb yog dab tsi yog hom?
Ua li no, 8 qhov kev tiv thaiv kev xeeb tub yog dab tsi?
Cov ntsiab lus hauv cov teeb no (14)
- Dab tsi yog 8 qhov kev tiv thaiv kev xeeb tub. lub cev nqaij daim tawv, kev coj cwj pwm, qhov chaw nyob, mechanical, gametic, hybrid inviability, hybrid sterility, thiab hybrid breakdown.
- dab tsi yog lub cev.
- tus cwj pwm yog dab tsi.
- qhov chaw nyob yog dab tsi.
- dab tsi yog mechanical.
- dab tsi yog gametic.
- dab tsi yog hybrid inviability.
- dab tsi yog hybrid sterility.
4 hom kev cais tawm yog dab tsi?
Cov no yog ecological, lub cev nqaij daim tawv, kev coj cwj pwm, mechanical / tshuaj thiab thaj chaw
- Ecological cais.
- Kev cais ib ntus.
- Kev cais tus cwj pwm.
- Mechanical lossis Chemical Isolation.
- Geographical Isolation.
Pom zoo:
Dab tsi yog lub sij hawm rau kev kawm txog kev xeeb tub?
Genetics yog txoj kev tshawb fawb txog kev tsim noob neej. Mendel yog thawj tus pom tias cov caj ces, lossis "yam" raws li nws hu ua lawv, yog cov tseem ceeb lossis tsis muaj zog thiab lawv tau txais los ntawm cov xeeb ntxwv los ntawm lawv niam lawv txiv
Vim li cas cov tshuaj tiv thaiv kev zom zaub mov hu ua hydrolysis cov tshuaj tiv thaiv?
Thaum lub sij hawm zom mov, piv txwv li, decompositionreactions zom cov zaub mov loj rau hauv cov me me los ntawm kev ntxiv cov dej molecules. Hom tshuaj no hu ua hydrolysis. Raws li dej absorbs heatenergy, qee lub zog yog siv los rhuav tshem hydrogenbonds
Puas yog dej tiv thaiv tsis muaj zog tiv thaiv?
Kev sib txhuam yog lub zog tshwm sim los ntawm ob yam khoom sib tsoo ua ke. Huab cua tsis kam thiab dej tsis kam yog hom kev sib txhuam. Lawv hu ua non- contact rog
Cov tshuaj tiv thaiv dab tsi yog qhov tshuaj tiv thaiv neutralization?
Neutralization yog ib hom tshuaj tiv thaiv nyob rau hauv uas muaj zog acid thiab muaj zog puag react nrog ib leeg los tsim dej thiab ntsev
Dab tsi yog tshuaj lom neeg cov tshuaj tiv thaiv thiab cov tshuaj tiv thaiv lub cev?
Qhov sib txawv ntawm cov tshuaj tiv thaiv lub cev thiab cov tshuaj tiv thaiv tshuaj yog muaj pes tsawg leeg. Hauv cov tshuaj tiv thaiv tshuaj, muaj kev hloov pauv ntawm cov tshuaj hauv nqe lus nug; nyob rau hauv ib qho kev hloov ntawm lub cev muaj qhov sib txawv ntawm qhov tsos, tsis hnov tsw, los yog cov duab yooj yim ntawm cov qauv ntawm cov teeb meem yam tsis muaj kev hloov pauv hauv cov ntsiab lus