Video: Dab tsi yog lub tswv yim ntawm kev txhawb nqa ntawm kev sib cais ntawm kev sib deev?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Kev txhawb zog yog cov txheej txheem uas ntuj xaiv nce kev rho menyuam tawm . Kev txhawb zog tuaj yeem tshwm sim raws li hauv qab no: Thaum ob pawg neeg uas tau khaws cia sib nrug, rov qab los rau hauv kev sib cuag, qhov kev rho menyuam tawm nruab nrab ntawm lawv tej zaum yuav ua kom tiav lossis tsis tiav. Yog tias ua tiav, kev tshwj xeeb tau tshwm sim.
Ib yam li ib tug yuav nug, lub ntsiab lus ntawm kev sib cais ntawm kev sib deev yog dab tsi?
Kev rho menyuam tawm hais txog qhov xwm txheej uas ntau hom tsiaj nyob hauv tib cheeb tsam, tab sis cov khoom ntawm tib neeg tiv thaiv lawv los ntawm kev sib tshuam. Tej yam uas txwv cov tsiaj los yog pab pawg ntawm cov kab mob reproducing kev sib deev hu ua cais tawm mechanisms.
Qhov thib ob, dab tsi yog cov txheej txheem ntawm kev rho menyuam tawm? Kev rho menyuam tawm tuaj yeem tshwm sim los ntawm pre-zygotic thiab post-zygotic teeb meem. Pre-zygotic barriers: cov teeb meem uas tiv thaiv tsiaj los ntawm mating. 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.
Tsis tas li ntawd, kev sib cais ntawm kev sib deev muaj feem cuam tshuam li cas rau evolution?
Kev rho menyuam tawm tsav tsheb evolution ntawm hom. Qhov no tuaj yeem tshwm sim los ntawm mating sib txawv, tsis muaj menyuam lossis ib puag ncig teeb meem uas thaum kawg ua rau kev hloov pauv mus rau ob hom. Txawm li cas los xij, kev rho menyuam tawm tsis txaus tab sis cov teeb meem sab hauv rau cov gene flow yog xav tau rau speciation rau evolve.
Prezygotic isolation yog dab tsi?
Kev yug me nyuam muab cais nyob ib leeg yog ib lub tswv yim uas ua rau cov tsiaj tsis sib haum nrog lwm tus. Prezygotic cais tiv thaiv fertilization ntawm qe thaum postzygotic muab cais nyob ib leeg tiv thaiv kev tsim ntawm fertile offspring. Thiab ib hom yog ib pawg ntawm cov kab mob uas tau muab cais tawm ntawm ib leeg.
Pom zoo:
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