Qhov txawv ntawm Evolution thiab Speciation

Cov txheej txheem:

Qhov txawv ntawm Evolution thiab Speciation
Qhov txawv ntawm Evolution thiab Speciation

Video: Qhov txawv ntawm Evolution thiab Speciation

Video: Qhov txawv ntawm Evolution thiab Speciation
Video: Types of Speciation: Allopatric, Sympatric, Peripatric, and Parapatric 2024, Kaum ib hlis
Anonim

Qhov Tseem Ceeb - Evolution vs. Speciation

Cov ntsiab lus evolution thiab speciation muaj kev sib txuas zoo heev, txawm hais tias lawv muaj cov ntsiab lus sib txawv hauv cov natural thiab social sciences. Raws li Darwin, evolution tshwm sim feem ntau los ntawm kev xaiv ntuj tsim los ntawm ib hom kev hloov pauv nrog cov yam ntxwv zoo dua qub uas ua rau lawv hloov kho nws qhov chaw hloov pauv. Txawm li cas los xij, Darwin txoj kev xav ntawm evolution tsis tau piav qhia meej tias cov tsiaj tshiab ua rau lwm tus li cas; txheej txheem hu ua speciation. Nws yog los ntawm lub tswv yim no tias qhov sib txawv ntawm ob lub tswv yim no tshwm sim. Qhov sib txawv tseem ceeb yog tias cov txheej txheem ntawm kev hloov pauv tuaj yeem txuas nrog qhov speciation, tab sis tsis tas. Hauv kab lus no, qhov sib txawv ntawm cov ntsiab lus evolution thiab speciation yuav tham luv luv.

Evolution yog dab tsi?

Evolution yog txhais raws li lub tswv yim hais tias lub neej hauv ntiaj teb hloov zuj zus los ntawm ib tug poj koob yawm txwv thiab tau txais ntau yam kev hloov pauv raws li qhov hloov pauv nrog lub sijhawm. Evolution tau txais kev txhawb nqa los ntawm cov kev tshawb fawb thiab kev soj ntsuam uas tau sau los ntawm lub sijhawm ntev. Cov kev hloov caj ces uas tshwm sim nrog cov evolution tau dhau los ntawm ib tiam mus rau tiam tom ntej. Nyob rau tib lub sijhawm, tus neeg uas muaj kev hloov pauv ntau dua yuav muaj sia nyob nrog kev hloov pauv ib puag ncig. Charles Darwin yog thawj tus kws tshawb fawb los kawm txog evolution. Raws li qhov tshwm sim ntawm nws cov kev tshawb fawb, nws tau tawm tswv yim txoj kev xav ntawm evolution, uas piav qhia txog yuav ua li cas hom evolve los ntawm cov txheej txheem ntawm kev xaiv ntuj. Raws li Darwin txoj kev xav, kev hloov pauv tsis yog tsim los ntawm kev paub dhau los, tab sis los ntawm kev sib txawv ntawm cov noob caj noob ces ntawm tib neeg. Muaj tsib yam uas kho cov evolution, uas yog; Kev hloov pauv, noob ntws, tsis sib xws, kev sib txuas caj ces thiab kev xaiv ntuj. Ib qho ntawm cov neeg sawv cev no tuaj yeem hloov pauv qhov zaus ntawm allele yog li pab txhawb kev hloov pauv.

Qhov txawv ntawm Evolution thiab Speciation
Qhov txawv ntawm Evolution thiab Speciation

Dab tsi yog Speciation?

Speciation yog cov kab ke sib cais ua rau muaj ob lossis ntau qhov sib cais. Speciation tshwm sim nyob rau hauv ob kauj ruam. Thawj cov pejxeem yuav tsum sib faib ua ob lossis ntau pawg, thiab qhov thib ob, kev sib cais ntawm cov menyuam yaus yuav tsum tau hloov zuj zus los tswj qhov sib txawv ntawm cov neeg nyob ib leeg. Speciation tuaj yeem tshwm sim vim qhov kev cais ntawm thaj chaw, uas yog hu ua allopatric speciation. Speciation uas tsis koom nrog thaj chaw speciation yog hu ua sympatric speciation. Nws pom tias qhov speciation muaj feem ntau tshwm sim nyob rau hauv thaj chaw uas nyob ib leeg. Reproductive cais tawm yog ib qho tseem ceeb heev ntawm kev txheeb xyuas. Genetic drift thiab kev xaiv ntuj tuaj yeem ua rau speciation. Tsis tas li ntawd, kev hloov pauv hluav taws xob, qhov twg cov tsiaj pom nws tus kheej hauv qhov chaw tshiab lossis hloov pauv sai kuj tseem tuaj yeem ua rau speciation.

Qhov Tseem Ceeb Qhov txawv - Evolution vs Speciation
Qhov Tseem Ceeb Qhov txawv - Evolution vs Speciation

Qhov txawv ntawm Evolution thiab Speciation yog dab tsi?

Definition:

Evolution yog lub tswv yim tias lub neej hauv ntiaj teb hloov zuj zus los ntawm ib tug poj koob yawm txwv thiab tau txais ntau yam kev hloov pauv raws li qhov hloov pauv nrog lub sijhawm.

Speciation is the lineage-splitting event uas ua rau ob los yog ntau tshaj cov txuj lom.

Caus:

Evolution yog tshwm sim los ntawm kev hloov pauv, noob ntws, tsis sib xws, kev sib txuas caj ces thiab kev xaiv ntuj.

Kev tshwj xeeb yog tshwm sim los ntawm thaj chaw sib cais, xaiv ntuj tsim, hloov hluav taws xob uas thaum kawg ua rau kev sib cais ntawm kev sib deev.

Pom zoo: