Cov txheej txheem:

Dab tsi yog qhov laj thawj tseem ceeb ntawm speciation?
Dab tsi yog qhov laj thawj tseem ceeb ntawm speciation?

Video: Dab tsi yog qhov laj thawj tseem ceeb ntawm speciation?

Video: Dab tsi yog qhov laj thawj tseem ceeb ntawm speciation?
Video: Dab ntxwg nyoos yog leej twg ...zaj no zoo heev. 2024, Kaum ib hlis
Anonim

Cov kws tshawb fawb xav tias thaj chaw nyob ib leeg yog ib txoj hauv kev rau cov txheej txheem ntawm kev tshwj xeeb pib: dej ntws hloov chaw, roob nce siab, sab av loj drift, kab mob migrate, thiab dab tsi yog ib zaug ib tug nruam pej xeem muab faib ua ob los yog ntau dua cov pejxeem.

Tsis tas li ntawd, speciation yog dab tsi thiab nws tsim li cas?

Kev txhais ntawm Qhov tshwj xeeb Hloov pauv, ' kev tshwj xeeb ' los yog cladogenesis tshwm sim los ntawm kev sib cais, qhov twg niam txiv hom tau muab faib ua ob hom sib txawv, feem ntau tshwm sim los ntawm thaj chaw cais lossis lwm qhov kev tsav tsheb uas cuam tshuam nrog kev sib cais ntawm cov neeg.

Ib yam li ntawd, plaub hom speciation yog dab tsi? Qhov tshwj xeeb . Muaj plaub loj variants ntawm kev tshwj xeeb : allopatric, peripatric, parapatric, thiab sympatric. Qhov tshwj xeeb yog li cas ib yam tshiab ntawm cov nroj tsuag los yog animalpecies yog tsim. Qhov tshwj xeeb tshwm sim thaum ib pab pawg hauv aspecies cais los ntawm lwm cov tswv cuab ntawm nws hom thiab tsim nws tus kheej cov yam ntxwv.

Yog li, dab tsi yog qhov ua rau speciation Class 10?

Cov yam ntxwv uas cuam tshuam rau cov txheej txheem ntawm speciation yog:

  • Geographical cais –
  • Genetic drift -
  • Ntuj xaiv –

Dab tsi yog speciation hauv evolution?

Qhov tshwj xeeb , tsim cov tshiab thiab txawv txawv nyob rau hauv lub chav kawm ntawm evolution . Qhov tshwj xeeb koom nrog kev sib cais ntawm ib leeg evolutionary kab mob mus rau ob los yog ntau tshaj genetic ywj siab lineages.

Pom zoo: