Video: Puas yog speciation macro lossis micro evolution?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Microevolution hais txog kev hloov pauv uas tshwm sim hauv ib hom tsiaj. Qhov tshwj xeeb txhais tau hais tias faib ib hom rau ob los yog ntau tshaj. Thiab macroevolution hais txog kev hloov pauv loj ntawm ntau yam kab mob uas peb pom hauv cov ntaub ntawv fossil.
Hauv qhov no, qhov txawv ntawm macro thiab micro evolution yog dab tsi?
Microevolution tshwm sim ntawm ib qho me me (hauv ib qho tib neeg), thaum macroevolution tshwm sim ntawm qhov ntsuas uas hla cov ciam teb ntawm ib hom. Txawm lawv sib txawv , evolution nyob rau hauv ob qho tib si ntawm cov theem no cia siab rau tib yam, tsim mechanisms ntawm evolutionary pauv: mutation.
Ib yam li ntawd, Micro Evolution yog dab tsi nws piav qhia speciation? Qhov tshwj xeeb yog qhov tseeb tias ob tug neeg nyob sib cais ntawm tib hom yug tau ob hom sib txawv. Microevolution yog txhua yam hais txog yuav ua li cas ua pej xeem sib txawv ntawm ib leeg. Cov speciation tau raug suav hais tias yog qhov sib txuas ntawm microevolution thiab macroevolution.
Ib yam li ntawd, koj yuav nug, puas yog speciation piv txwv ntawm macroevolution?
Kev piav qhia: speciations tshwm sim los ntawm kev xaiv ntuj ntawm preexisting variation nyob rau hauv DNA ntawm ib tug kab mob. Macroevolution yuav tsum tau tsim cov ntaub ntawv tshiab. Ib piv txwv ntawm kev tshwj xeeb yuav yog qhov kev hloov pauv ntawm Finches ntawm Galapagos Islands.
Puas yog microevolution coj mus rau speciation?
Microevolution yog qhov kev hloov pauv hauv allele frequencies uas tshwm sim dhau sij hawm hauv cov neeg. Microevolution dhau sijhawm ua rau speciation los yog cov tsos ntawm cov qauv tshiab, qee zaum cais raws li macroevolution.
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