Cov txheej txheem:
Video: Nyob rau hauv qhov scenario yuav natural xaiv feem ntau pom tseeb tshwm sim?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ntuj xaiv zoo li thaum muaj zog xaiv siab. Piv txwv li, ib tug perpetual xaiv Lub siab yog qhov tseeb tias cov kab mob yuav tsum sib tw rau cov khoom noj thiab cov peev txheej, txhais tau hais tias cov neeg yoog tau zoo tshaj plaws. Txawm li cas los xij, muaj zog dua xaiv siab yuav ua rau natural xaiv rau tshwm sim ntau pom tseeb.
Ib yam li ntawd ib tug yuav nug, dab tsi yog ib qho piv txwv ntawm kev xaiv ntuj?
Ntuj xaiv yog cov txheej txheem nyob rau hauv qhov uas cov kab mob zoo yoog rau lawv ib puag ncig zoo li muaj sia nyob thiab yug me nyuam ntau dua li cov uas tsis haum rau lawv ib puag ncig. Rau piv txwv , treefrogs qee zaum noj los ntawm nab thiab noog. Qhov no piav qhia txog kev faib ntawm Grey thiab Green Treefrogs.
Tsis tas li ntawd, cov kab mob twg yog cov pejxeem? A pej xeem txhais tau tias yog a pawg kab mob ntawm tib hom uas nyob hauv ib cheeb tsam. Yuav muaj ntau tshaj ib pej xeem nyob hauv ib cheeb tsam twg. Yuav muaj ib tug pej xeem ntawm Saguaro Cacti, a pej xeem ntawm Cactus Wrens thiab a pej xeem ntawm Bark Scorpion nyob hauv tib thaj chaw.
Ntxiv rau qhov no, dab tsi txhawb nqa kev xaiv ntuj?
Plaub yam uas tsim nyog rau kev xaiv ntuj tsim los tshwm sim yog:
- Ntau yam kab mob yog yug dua li muaj sia nyob.
- Cov kab mob sib txawv hauv lawv cov yam ntxwv, txawm nyob hauv ib hom.
- Variation yog inherited.
- Qhov sib txawv ntawm kev yug me nyuam thiab kev ciaj sia yog vim kev sib txawv ntawm cov kab mob.
Dab tsi yog qhov tseeb txog kev xaiv ntuj?
Ntuj xaiv yog qhov sib txawv ntawm kev ciaj sia thiab kev tsim tawm ntawm tib neeg vim qhov sib txawv ntawm phenotype. Nws yog ib qho tseem ceeb mechanism ntawm evolution, qhov kev hloov ntawm cov cuab yeej cuab tam yam ntxwv ntawm ib tug pej xeem ntau tiam. Variation muaj nyob rau hauv tag nrho cov pejxeem ntawm cov kab mob.
Pom zoo:
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