2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Ib daim ntawv ntawm kev sib tw tsis sib xws yog kev sib txuas, uas tshwm sim thaum cov tib neeg uas muaj cov genotypes zoo sib xws feem ntau yuav ua phooj ywg nrog ib leeg es tsis yog cov tib neeg uas muaj cov genotypes sib txawv. … Txawm hais tias kev yug me nyuam tuaj yeem ua rau txo qis ntawm kev hloov pauv ntawm caj ces, kev yug me nyuam tuaj yeem ua rau nce.
Puas random mating nce genetic variation?
Mendelian cais tawm muaj cov cuab yeej uas random mating ua rau muaj kev sib npaug ntawm cov genotypes tom qab tsuas yog ib tiam, yog li caj ces hloov pauv tau khaws cia.
Yuav ua li cas yog qhov txiaj ntsig ntawm kev sib tw tsis sib xws?
Like recombination, non-random mating can ua raws li txheej txheem ntxiv rau kev xaiv ntuj tsim kom muaj kev hloov pauv tshwm sim. Txhua qhov kev tawm mus los ntawm kev sib raug zoo tsis sib haum ua rau qhov sib npaug ntawm cov genotypes hauv cov pej xeem. Qhov no yuav tshwm sim txawm tias kev xaiv khub niam txiv yog qhov zoo lossis qhov tsis zoo.
Puas tsis yog kev sib koom ua ke ntawm kev sib txawv?
Kev sib raug zoo tsis sib xws yuav tsis ua rau cov neeg nyob hauv cov pejxeem hloov ntawm nws tus kheej, txawm tias nws tuaj yeem hloov pauv genotype zaus. Qhov no ua rau cov pej xeem tsis nyob hauv Hardy-Weinberg equilibrium, tab sis nws yog debatable seb nws suav li evolution, vim hais tias cov allele frequencies nyob tib yam.
Kev sib raug zoo tsis sib xws cuam tshuam li cas rau txhua zaus?
Qhov no yog qhov txiaj ntsig zoo: kev sib tw tsis sib xws, txawm tiasnyob rau hauv daim ntawv phem tshaj plaws ntawm nws tus kheej fertilization, tsis cuam tshuam 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.
Pom zoo:
Thaum twg yog lub caij owl mating?
Owls yug nyob rau lub caij ntuj no, yog li lub caij nplooj zeeg lawv pib sib tham. Yog tias koj mloog thaum hmo ntuj, koj tuaj yeem hnov lawv hu xov tooj mus hais plaub, tshwj xeeb tshaj yog tus poj horned owl. Owls, uas yog monogamous, muaj lawv cov menyuam thaum Lub Ib Hlis.
Puas yog txoj kev taug kev nce mus nce mus rau parish dej qhib?
NO YOG IB TUG TSEEM CEEB NTAWM: Ascension Parish OHSEP: Raws li ntawm tag kis no tag nrho Ascension Parish waterways tseem qhib rau kev ua si hauv nkoj tab sis qeeb qeeb. Cov neeg caij nkoj tau hais kom ceev faj thiab… Pab pawg ntseeg twg yog Ascension Parish muaj?
Kuv puas tuaj yeem da dej kuv tus dev tom qab mating?
Nws tsis yog zoo kawg nkaus da dej rau tus dev hauv tshav kub, nws tuaj yeem muaj txiaj ntsig zoo rau lawv. Thaum tus dev nyob hauv tshav kub, nws zoo li lawv yuav los ntshav me ntsis ntawm lawv qhov chaw mos. Kev da dej tus dev tuaj yeem pab tshem tawm cov kab mob ntshav, qee yam tseem ceeb rau cov dev nrog lub tsho dawb.
Puas yog genetic txhais tau tias yog xeeb tub?
Ib yam qub txeeg qub teg yog ib yam uas txiav txim siab caj ces . Cov cwj pwm qub qub tau dhau los ntawm niam txiv mus rau cov xeeb ntxwv raws li txoj cai ntawm Mendelian noob caj noob ces Mendelian noob caj noob ces Mendelian qub txeeg qub teg yog hais txog cov qauv qub txeeg qub teg uas yog tus yam ntxwv ntawm cov kab mob uas tsim kev sib deev.
Puas yog genetic drift random lossis nonrandom?
Genetic drift ua rau random fixation ntawm alleles thiab poob ntawm heterozygosity. Daim duab 6.13 qhia txog txoj hauv kev ntawm ntau haiv neeg, qhia tias: Txhua tus pej xeem ua raws ib qho kev sib txawv (txoj kev evolutionary). Qee cov alleles tau kho hauv qee cov pejxeem, lwm cov alleles tau tsau rau lwm cov pejxeem.
