Txhua hom kev xaiv muaj tib lub hauv paus ntsiab lus, tab sis txawv me ntsis. Kev xaiv cuam tshuam nyiam ob qho tib si huab cua phenotypes , sib txawv ntawm ib qho huab hauv kev xaiv. Stabilizing xaiv Stabilizing xaiv Stabilizing xaiv (tsis yog yuav tsum tau to taub qhov tsis zoo los yog purifying xaiv) yog ib tug hom kev xaiv ntuj uas cov pejxeem txhais tau tias stabilizes ntawm ib qho kev tsis zoo ntawm tus nqi. … Qhov no txhais tau hais tias feem ntau cov phenotype nyob rau hauv cov pej xeem raug xaiv rau thiab tseem muaj nyob rau tiam tom ntej. https://en.wikipedia.org › wiki › Stabilizing_selection
kev xaiv ruaj khov - Wikipedia
nyiam qhov nruab nrab phenotype, ua rau poob qis hauv kev hloov pauv hauv cov pej xeem dhau sijhawm.
Dab tsi yog qhov txawv ntawm kev xaiv cuam tshuam thiab kev xaiv cov lus nug kom ruaj khov?
2: Kev xaiv cuam tshuam tshwm sim thaum kev xaiv nyiam qhov qhov zoo tshaj qhov tseem ceeb tshajqhov txiaj ntsig nruab nrab. … 3: Kev xaiv ruaj khov tshwm sim thaum kev xaiv nyiam tus nqi nruab nrab ntawm qhov zoo tshaj qhov muaj nuj nqis heev.
Vim li cas thiaj ruaj khov rau qhov kev xaiv tsis sib haum?
Kev xaiv ruaj khov yog qhov cuam tshuam ntawm kev xaiv cuam tshuam. Es tsis txhob nyiam cov tib neeg uas muaj phenotypes heev, nws nyiam qhov sib txawv nruab nrab. Stabilizing xaiv nyiam tshem tawm cov phenotypes hnyav dua,ua rau muaj kev loj hlob zoo ntawm cov qauv lossis nruab nrab phenotypes.
Kev xaiv ruaj khov thiab kev xaiv cuam tshuam dab tsi muaj sib xws?
Kev xaiv ruaj khov thiab kev xaiv cuam tshuam dab tsi muaj sib xws? Lawv ob leeg txo kev hloov caj ces. Raws li qhov xwm txheej twg qhov kev hloov pauv yuav muaj feem cuam tshuam ntau tshaj plaws ntawm allele zaus? … Tom qab dej nyab, cov ntsaum neeg coob zuj zus, tab sis nws cov zaus allele txawv.
Kev xaiv yam twg yog kev xaiv cuam tshuam?
Kev xaiv tsis sib haum yog ib hom kev xaiv ntuj xaiv uas nquag xaiv tawm tsam nruab nrab hauv cov pejxeem, nyiam ob qho tib si ntawm cov spectrum. Cov kev xaiv cuam tshuam tau raug suav hais tias feem ntau ua rau muaj kev sib haum xeeb los ntawm phyletic gradualism hom ntawm evolution.
