Raws li qhov kev ntxub ntxaug yog cov noob caj noob ces, evolution feem ntau yog qhov tshwm sim. Kev sib tw tsis sib xws tuaj yeem ua raws li cov txheej txheem ntxiv rau kev xaiv ntuj tsim kom muaj kev hloov pauv. Txhua qhov kev tawm mus los ntawm kev sib raug zoo sib xws ua rau muaj kev sib npaug ntawm cov genotypes hauv cov pejxeem.
Kev sib raug zoo tsis sib xws cuam tshuam li cas rau txhua zaus?
Qhov no yog qhov txiaj ntsig zoo: kev sib koom ua ke tsis sib xws, txawm tias nyob rau hauv daim ntawv loj tshaj plaws ntawm tus kheej fertilization, tsis muaj txiaj ntsig rau allele zaus. Selfing ua rau genotype zaus hloov pauv raws li qhov zaus ntawm homozygotes nce thiab qhov zaus ntawm heterozygotes txo qis, tab sis cov zaus allele tseem nyob tas li.
Yuav ua li cas yog qhov tseem ceeb ntawm kev sib tw tsis sib xws?
Qhov tseem ceeb ntawm kev sib tw tsis sib xws. Kev sib deev dimorphism (kev sib txawv ntawm ob tus poj niam txiv neej) tshwm sim los ntawm kev sib deev tsis sib xws. Cov txheej txheem yog ib rooj plaub tshwj xeeb ntawm kev xaiv ntuj hu ua kev xaiv kev sib deev. Kev xaiv kev sib deev tuaj yeem ua rau muaj kev cuam tshuam rau kev yug me nyuam ntawm cov tsiaj zoo sib xws.
Qhov cuam tshuam dab tsi tuaj yeem ua rau kev sib raug zoo tsis sib xws ntawm genotypes?
Kev sib koom ua ke thiab tsis sib koom ua ke tuaj yeem hloov pauv zaus ntawm genotypes uas tuaj yeem xaiv tau lossis tawm tsam los ntawm xwm. Genetic drift kuj tseem tuaj yeem ua rau muaj kev hloov pauv sai ntawm cov noob caj noob ces ntawm cov me me, cov noob caj noob ces.
yog dab tsipiv txwv ntawm kev sib tw tsis sib xws?
Muaj ntau ntau yam uas tsis sib haum xeeb tshwm sim. Ib qho laj thawj yog kev xaiv khub niam txiv yooj yim lossis xaiv kev sib deev; Piv txwv li, poj niam peahens yuav nyiam peacocks nrog loj dua tails.
