Video: Yuav ua li cas koj xam allele zaus?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Ib allele zaus yog xam los ntawm kev faib tus naj npawb ntawm lub sij hawm allele kev txaus siab yog pom nyob rau hauv ib tug pej xeem los ntawm tag nrho cov xov tooj ntawm cov ntawv luam ntawm tag nrho cov alleles ntawm qhov tshwj xeeb genetic locus nyob rau hauv cov pejxeem. Allele zaus tuaj yeem sawv cev ua tus lej, feem pua, lossis feem.
Ntawm no, koj ua li cas suav allele frequencies?
Allele zaus hais txog yuav ua li cas ib qho allele yog nyob rau hauv cov pejxeem. Nws yog txiav txim siab los ntawm suav pes tsawg zaus tus allele tshwm nyob rau hauv cov pej xeem ces faib los ntawm tag nrho cov luam ntawm cov noob . Cov noob pas dej ua ke ntawm cov pejxeem muaj tag nrho cov ntawv luam ntawm tag nrho cov noob nyob rau hauv cov pejxeem.
Ib sab saum toj no, koj ua li cas suav cov zaus ntawm allele hauv tiam tom ntej? Tsis tas li ntawd, lub zaus ntawm A alleles yuav p2 + pq (sib npaug rau cov zaus ntawm AA cov tib neeg ntxiv rau ib nrab zaus ntawm cov neeg Aa). Txij li thaum p + q =1, ces q = 1 - p. Cov zaus ntawm A alleles yog p2 + pq, uas sib npaug p2 + p (1 - p) = p2 +p -p2 = np; uas yog, p nyob twj ywm tib yam los ntawm ib qho tiam mus rau tom ntej no.
Tsis tas li ntawd, qhov zaus ntawm tus allele yog dab tsi?
Allele zaus , los yog gene zaus , yog tus txheeb ze zaus ntawm ib qho allele (variant ntawm ib tug gene) ntawm ib qho chaw nyob rau hauv ib tug pej xeem, qhia raws li ib feem los yog feem pua. Tshwj xeeb, nws yog ib feem ntawm tag nrho cov chromosomes hauv cov neeg uas nqa qhov ntawd allele.
Dab tsi cuam tshuam rau allele zaus?
Kom meej meej, allele zaus tuaj yeem hloov pauv raws sijhawm hauv ib leeg, thiab feem ntau sib txawv ntawm cov pejxeem. Cov kev sib tham hauv qab no hais txog qhov tseem ceeb tshaj plaws yam cuam tshuam allele zaus : Genetic Isolation, Migration ( noob flow), Mutation, Natural Selection, Artificial Selection, thiab Chance.
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