Puas muaj kev sib haum xeeb pej xeem speciation?

Cov txheej txheem:

Puas muaj kev sib haum xeeb pej xeem speciation?
Puas muaj kev sib haum xeeb pej xeem speciation?

Video: Puas muaj kev sib haum xeeb pej xeem speciation?

Video: Puas muaj kev sib haum xeeb pej xeem speciation?
Video: Toj xeem deev pej xeem poj niam 5/22/2018 2024, Hlis ntuj nqeg
Anonim

Ib tug neeg piav qhia tias muaj kev sib haum xeeb thaum ob tus neeg cuam tshuam txog kev vam meej hauv tib cheeb tsam. Speciation yuav tsis tshwm sim yog tias kev sib cais tsis tshwm sim los yog nws tshwm sim, yuav tsis kav ntev heev uas ob pab pawg nws thiaj li speciate.

Ib qho piv txwv ntawm sympatric speciation yog dab tsi?

Txoj kev xav yog tias qee tus neeg tau nyob ntawm qee yam ntawm ib puag ncig-xws li vaj tse lossis khoom noj-thaum lwm tus tsis ua. Ib qho piv txwv ntawm sympatric speciation yog apple maggot, ib kab uas tso nws cov qe hauv cov txiv apple, ua rau nws lwj.

Vim li cas sympatric speciation tsis yooj yim?

Cov Ntsiab Lus thiab Kev Paub

Kev sib haum xeeb thiab kev sib txawv, nrog rau kev txhawb nqa ntawm kev sib cais ntawm kev ua me nyuam, yog nyuaj vim cov noob ntws tawm tsam cov rog uas tsim kev sib txawv(xws li raws li drift thiab natural xaiv).

Puas muaj kev sib hlub sib pab nyob ib leeg?

Sympatric speciation tshwm sim thaum cov neeg ntawm ib hom tsiaj uas sib koom tib lub vaj tse ua luam tawm los ntawm ib leegQhov xwm txheej tshwj xeeb no feem ntau tshwm sim los ntawm polyploidy, uas cov xeeb ntxwv lossis pab pawg cov xeeb ntxwv yuav raug tsim nrog ob npaug ntawm tus lej ntawm cov chromosomes.

Dab tsi tuaj yeem ua rau qhov tshwj xeeb?

Speciation tuaj yeem yog tsav los ntawm evolution, uas yog txheej txheem uas ua rau muaj ntau yam kev hloov pauv me me hu ua kev hloov pauv hauv cov pej xeem nyob rau lub sijhawm ntev. … Kev xaiv tej yam ntuj tso tuaj yeem ua rau cov kab mob uas muaj feem yuav muaj sia nyob thiab yug dua tshiab thiab tej zaum yuav ua rau muaj qhov tshwj xeeb.

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