Qhov sib txawv tseem ceeb ntawm cov noob tsiv teb tsaws thiab cov noob caj noob ces yog cov noob tsiv teb tsaws yog kev hloov ntawm cov noob / alleles los ntawm ib tus neeg mus rau lwm tus neeg thaum genetic drift yog qhov kev hloov pauv ntawm alleles 'frequencies vim random sampling ntawm ib tiam mus rau lwm tus..
Kev hloov pauv caj ces thiab caj ces yog ob nqe lus uas feem ntau siv hauv cov noob caj noob ces. Ob nqe lus yog txuam nrog cov kev hloov pauv tshwm sim hauv cov noob caj noob ces ntawm cov pejxeem.
Yeeb Migration yog dab tsi?
Gene migration, tseem hu ua gene flow, yog kev hloov cov khoom siv caj ces ntawm ib tus neeg mus rau lwm tus. Hauv cov lus yooj yim, gene migration yog kev txav ntawm cov noob los ntawm ib pawg ntawm cov kab mob mus rau lwm pawg kab mob.
Daim duab 01: Gene Migration
Kev hloov pauv hauv cov noob muaj pes tsawg leeg ntawm cov pejxeem tshwm sim dhau sijhawm thaum lub sijhawm cov noob. Cov kev hloov no yog vim cov noob txav es tsis yog kev hloov pauv thiab kev xaiv ntuj. Yog li ntawd, kev taw qhia lossis kev tshem tawm ntawm alleles yog lub luag haujlwm rau kev hloov pauv hauv cov tshuaj pleev. Kev hloov pauv ntawm cov alleles hauv thiab tawm ntawm cov noob caj noob ces tshwm sim vim yog kev tsiv teb tsaws ntawm noob. Nws tshwm sim thaum cov kab mob txav mus rau hauv thiab tawm ntawm cov neeg.
Dab tsi yog Genetic Drift?
Txiv neej drift yog ib qho tshwm sim uas feem ntau tshwm sim hauv cov neeg me thiab tsis zoo li tshwm sim hauv cov neeg coob. Yeej, nws tshwm sim vim kev hloov pauv hauv cov zaus ntawm allele uas tuaj yeem ua rau ploj ntawm qee cov noob los ntawm cov neeg me vim tuag lossis tsis ua kev tsim tawm. Thaum kawg, genetic drift ua rau muaj kev sib txawv ntawm cov caj ces tsawg thiab kev hloov pauv hauv cov neeg. Tsis tas li ntawd, nws ua rau ploj ntawm qee cov noob variants tag nrho los ntawm cov neeg. Ntxiv mus, nws tuaj yeem ua rau qee qhov tsis tshua muaj alleles ua ntau zaus dua li ua ntej.
Daim duab 02: Genetic Drift
Txiv neej drift muaj ob hom ua cov nyhuv bottleneck thiab tus tsim cov nyhuv. Lawv ua rau cov neeg txo qis heev. Cov nyhuv Bottleneck tshwm sim thaum cov pej xeem sib cog lus loj rau hauv qhov me me. Nws tuaj yeem tshwm sim vim muaj kev puas tsuaj ntuj xws li av qeeg, dej nyab, hluav taws kub. Hauv qhov sib piv, tus tsim tshwm sim tshwm sim thaum ib pab pawg me hauv cov pej xeem sib cais tawm ntawm cov pej xeem qub thiab tsim ib qho tshiab.
Dab tsi zoo sib xws ntawm Gene Migration thiab Genetic Drift?
- Gene flow and genetic drift yog pejxeem noob caj noob ces
- Vim ob qhov xwm txheej, kev tsim caj ces ntawm tus kheej hloov.
Qhov txawv ntawm Gene Migration thiab Genetic Drift yog dab tsi?
Gene migration yog tus txheej txheem ntawm kev hloov cov noob los ntawm ib tus neeg mus rau lwm tus thaum genetic drift yog qhov kev hloov pauv ntawm allele zaus hauv cov pej xeem vim yog qhov piv txwv. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov noob tsiv teb tsaws thiab cov noob caj noob ces. Tsis tas li ntawd, qhov kev hloov pauv caj ces tshwm sim hauv cov noob tsiv teb tsaws, feem ntau yog vim kev hloov pauv ntawm alleles rau hauv thiab tawm ntawm cov gene pas dej. Nyob rau hauv sib piv, nyob rau hauv genetic drift, alteration ntawm allele frequencies ntawm ib tug pej xeem tshwm sim vim yog random sampling.
Hauv qab infographic qhia qhov sib txawv ntawm cov noob tsiv teb tsaws thiab cov noob caj noob ces nyob rau hauv daim ntawv tabular.
Summary – Gene Migration vs Genetic Drift
Gene migration thiab genetic drift yog ob lub ntsiab phenomena uas hloov cov caj ces variation ntawm ib tug neeg muab. Gene migration yog kev txav ntawm cov noob los ntawm ib tus neeg mus rau lwm tus. Thaum cov kab mob txav mus rau hauv thiab tawm ntawm cov pej xeem, gene migration tshwm sim. Hauv genetic drift, allele zaus hauv cov pej xeem hloov pauv ntau tiam neeg vim muaj kev cuam tshuam random. Genetic drift tshwm sim feem ntau nyob rau hauv cov pej xeem me vim yog tus tsim cov nyhuv los yog lub hauv paus caj dab. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm cov noob tsiv teb tsaws thiab genetic drift.
