Video: Dab tsi yog speciation los ntawm geographic cais?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Geographic cais tawm yog ib hom kev yug me nyuam muab cais nyob ib leeg uas tshwm sim thaum a thaj chaw barrier cais ob haiv neeg ntawm ib hom, ua rau kev tshwj xeeb.
Ib yam li ntawd, kev cais tawm hauv thaj chaw yog dab tsi?
Geographic cais tawm yog ib lo lus uas hais txog cov pejxeem ntawm cov tsiaj, nroj tsuag, lossis lwm yam kab mob uas sib cais los ntawm kev sib pauv cov khoom siv caj ces nrog lwm cov kab mob ntawm tib hom. Feem ntau kev cais thaj chaw yog qhov tshwm sim ntawm kev huam yuaj los yog coincidence.
Qhov thib ob, hom speciation twg yuav tsum muaj thaj chaw teeb meem? Allopatric speciation xav tau ib tug geographic barrier . Qhov tshwj xeeb yog thaum ib hom cais ua ob hom lossis thaum ib hom hloov mus rau lwm lub sijhawm.
Ntxiv mus, speciation thiab cais tawm yog dab tsi?
Qhov tshwj xeeb cuam tshuam txog kev yug menyuam muab cais nyob ib leeg ntawm cov pab pawg nyob rau hauv thawj cov pej xeem thiab tsub zuj zuj ntawm genetic sib txawv ntawm ob pawg. Hauv allopatric kev tshwj xeeb , cov pab pawg tau sib cais cais tawm thiab sib txawv vim muaj kev cuam tshuam ntawm thaj chaw.
Speciation tuaj yeem tshwm sim yam tsis muaj kev sib cais ntawm thaj chaw?
Ib qho kev tsis sib haum xeeb rau allopatric kev tshwj xeeb yog sympathic kev tshwj xeeb , nyob rau hauv uas kev yug me nyuam Kev cais tawm tshwm sim hauv ib haiv neeg tsis muaj geographic cais . Feem ntau, thaum cov pejxeem raug cais tawm ntawm lub cev, qee qhov kev loj hlob muab cais nyob ib leeg tshwm sim.
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