Kev yug me nyuam ua rau muaj kev pheej hmoo ntawm cov noob tsis zoo Lawv tau txais ib daim qauv ntawm cov niam txiv los ntawm txhua tus niam txivTsiaj txhu uas muaj feem cuam tshuam zoo dua yuav nqa ib daim qauv ntawm tib lub noob caj noob ces. Qhov no ua rau muaj kev pheej hmoo uas lawv ob leeg yuav dhau ib daim qauv ntawm cov noob mus rau lawv cov xeeb ntxwv.
Vim li cas kev hloov pauv tshwm sim hauv kev yug me nyuam?
By inbreeding, cov tib neeg tau txo qis kev hloov pauv caj ces los ntawm kev nce homozygosity hauv cov genomes ntawm lawv cov xeeb ntxwvYog li, qhov tshwm sim ntawm kev tshem tawm recessive alleles rau khub yog qhov siab dua hauv ib qho me me inbreeding. pej xeem tshaj nyob rau hauv ib tug loj inbreeding pejxeem.
YKev sib deev cuam tshuam DNA li cas?
Thaum kev yug me nyuam tshwm sim thiab ob tus neeg txheeb ze muaj menyuam, cov menyuam no yuav muaj ntau haiv neeg tsawg hauv lawv cov DNA. Qhov no txhais tau hais tias cov me nyuam inbred yuav muaj tsawg dua hom MHC alleles(lossis tsawg dua). Nrog tsawg hom MHC alleles, lawv tuaj yeem ntes tsawg hom khoom txawv teb chaws (lossis xauv).
Puas yog kev hloov caj ces los ntawm kev yug me nyuam?
Raws li qee qhov kwv yees, koj thiab kuv txhua tus muaj txog 1 qhov kev hloov pauv zais zais zais. Thaum homozygous, cov kev hloov pauv no txo qis zog; inbreeding yog li ntawd yuav ua rau inbreeding kev nyuaj siab raws li cov homozygous mutations tau qhia. Txawm li cas los xij, inbreeding tsis yog txhua yam phem, thiab ntau yam kab mob ib txwm ua rau yug.
Kev yug me nyuam cuam tshuam li cas ntawm caj ces?
Raws li cov ntaub ntawv nrog qhov nruab nrab inbreeding, genetic drift yog inversely ntsig txog Ne Yog li ntawd, me me hatchery pejxeem yuav ua rau random hloov nyob rau hauv. gene zaus. Qhov kawg tshwm sim ntawm ib qho me me Ne yog qhov poob ntawm alleles ntawm caj ces drift. Tsis tshua muaj alleles yuav ploj yooj yim dua, tab sis cov alleles feem ntau tuaj yeem ploj.
