Gene ntws yog qhov txav ntawm cov noob rau hauv lossis tawm ntawm cov pejxeem. Xws li kev txav mus los yuav yog vim kev tsiv teb tsaws ntawm tus kheej cov kab mob uas tsim tawm hauv lawv cov neeg tshiab, lossis rau kev txav ntawm gametes (piv txwv li, vim yog qhov tshwm sim ntawm pollen hloov ntawm cov nroj tsuag).
2 hom noob caj noob ces yog dab tsi?
Hloov pauv, cov noob ntws tuaj yeem tshwm sim ntawm ob hom sib txawv los ntawm kab rov tav gene hloov pauv(HGT, tseem hu ua lateral gene transfer), xws li cov noob hloov ntawm cov kab mob lossis kab mob mus rau cov kab mob siab dua, lossis hloov cov noob los ntawm qhov endosymbiont mus rau tus tswv.
Dab tsi tuaj yeem ua rau cov noob ntws?
Ntawm Kev Xav ntawm Evolution: Gene Flow. Evolution kuj tuaj yeem tshwm sim raws li qhov tshwm sim ntawm cov noob tau hloov pauv ntawm ib tus neeg mus rau lwm tus. Cov noob ntws no tshwm sim thaum muaj kev tsiv teb tsaws chaw. Kev poob lossis sib ntxiv ntawm tib neeg tuaj yeem hloov pauv cov noob caj pas ntau zaus txawm tias tsis muaj lwm yam kev hloov pauv hloov pauv.
Puas noob ntws tshwm sim los ntawm lub sijhawm?
Txoj kev muaj noob caj noob ces yog los ntawm qhov tshwm simtias qee tus neeg muaj cov xeeb ntxwv ntau dua li lwm tus thiab ua rau muaj kev hloov pauv hauv allele zaus uas yog random nyob rau hauv kev coj. Thaum cov tib neeg tawm mus lossis koom nrog cov pej xeem, allele zaus tuaj yeem hloov pauv raws li qhov tshwm sim ntawm cov noob ntws.
Ntxhais yog dab tsi thiab dab tsi ua rau nws?
Gene ntws yog kev hloov ntawm cov khoom caj ces ntawm ib tus neeg mus rau lwm tus. Gene ntws tuaj yeem nojqhov chaw nruab nrab ntawm ob haiv neeg ntawm tib hom los ntawm kev tsiv teb tsaws, thiab kho kom haum xeeb los ntawm kev yug me nyuam thiab ntsug gene hloov los ntawm niam txiv mus rau cov xeeb ntxwv.
