Qhov sib txawv tseem ceeb ntawm kev sib xyaw heterozygote thiab ob lub heterozygote yog qhov sib xyaw heterozygote yog ib tus neeg uas muaj ob qhov sib txawv ntawm cov noob caj noob ces thaum ob lub heterozygote yog ib tus neeg uas yog heterozygous ntawm ob qhov kev tshuaj ntsuam genetic loci.
Feem ntau, ib lub noob muaj ob lub alleles vim cov kab mob yog diploid. Alleles yog cov qauv sib txawv ntawm cov noob. Lawv yog nyob rau hauv ib tug genetic chaw ntawm ib tug chromosome. Muaj cov tseem ceeb alleles thiab recessive alleles. Yog tias ib tus neeg muaj ob qhov sib txawv ntawm cov alleles (ib qho tseem ceeb thiab ib qho rov qab (Aa)) rau ib qho chaw, peb hu nws heterozygote. Qhov xwm txheej ntawm muaj ob qho sib txawv alleles rau cov noob hu ua heterozygous xeev. Compound heterozygote thiab ob chav heterozygote yog ob hom heterozygous xwm txheej. Compound heterozygote muaj ob qhov sib txawv ntawm qhov sib txawv ntawm cov noob caj noob ces. Ob chav heterozygote yog heterozygous ntawm ob gene loci.
Compound Heterozygote yog dab tsi?
Compound heterozygote, tseem hu ua genetic compound, yog hais txog ib tus neeg uas muaj ob qhov kev hloov pauv ntawm ib lub noob. Compound heterozygote muaj ob lossis ntau dua heterogeneous recessive alleles ntawm ib qho chaw tshwj xeeb, uas tuaj yeem ua rau cov kab mob caj ces hauv lub xeev heterozygous. Ob leeg alleles yog mutated. Feem ntau, ob daim ntawv luam los ntawm niam txiv (ib qho los ntawm leej niam thiab ib qho los ntawm leej txiv). Hauv kev sib xyaw heterozygous, ob daim ntawv luam no muaj kev hloov pauv uas txawv. Qhov no yog qhov tsis tshua muaj tshwm sim. Nws yog deleterious thiab ua rau autosomal recessive zoo.
Daim duab 01: Compound heterozygote – Phenylketonuria
Compound heterozygote tau pom nyob rau hauv yuav luag txhua yam kev mob autosomal recessive. Thaum ntau qhov kev hloov pauv tshwm sim, lawv cuam tshuam rau cov noob thiab cov khoom lag luam. Thaum kawg, nws tuaj yeem ua rau muaj kab mob uas yog qhov chaw kho mob hnyav dua. Phenylketonuria, Tay-Sachs kab mob thiab mob cell syndrome yog ntau yam kab mob caj ces tshwm sim los ntawm kev sib xyaw heterozygosity.
Dab tsi yog Heterozygote?
Ob chav heterozygote yog ib tus neeg uas yog heterozygous ntawm ob qhov sib txawv ntawm cov noob caj noob ces. Hauv lwm lo lus, ob lub heterozygote muaj ob lub alleles sib txawv rau ob lub noob. Nws tuaj yeem pom raws li AaBb. Heterozygous (Aa) rau ib lub noob (locus). Tib lub sijhawm, tus neeg ntawd yog heterozygous (Bb) rau lwm cov noob (locus). Lwm ob npaug ntawm heterozygote tuaj yeem pom raws li RrYy. Ib tug ntoo khaub lig ntawm ob ob heterozygotes muab 9: 3: 3: 1 phenotypic piv thaum cov noob tsis txuas.
Dab tsi zoo sib xws ntawm Compound Heterozygote thiab Ob Chav Heterozygote?
- Ob qho tib si thiab ob lub heterozygotes muaj qhov sib txawv ntawm cov noob uas tau txiav txim siab.
- Kev hloov pauv ntawm ob qho xwm txheej ua rau muaj kev cuam tshuam caj ces.
Qhov txawv ntawm Compound Heterozygote thiab Ob Chav Heterozygote yog dab tsi?
Compound heterozygote yog ib tus neeg uas muaj ob lossis ntau dua heterogeneous recessive alleles ntawm ib qho chaw tshwj xeeb uas tuaj yeem ua rau muaj kab mob caj ces. Ntawm qhov tod tes, ob chav heterozygote yog ib tus neeg uas yog heterozygous rau ob lub noob. Yog li, qhov no yog qhov txawv ntawm qhov sib xyaw heterozygote thiab ob chav heterozygote. Nyob rau hauv ib tug compound heterozygote, vim hais tias ob qho tag nrho alleles yog mutated, ob qho tag nrho cov alleles yog defect. Hauv qhov sib piv, hauv ob chav hetrozygotes, alleles tsis muaj qhov tsis zoo, tab sis kev hloov pauv tuaj yeem ua rau muaj kab mob.
Tsis tas li ntawd, cov tshuaj heterozygote muaj ob lub alleles recessive rau tib lub noob. Thiab, ob leeg alleles yog mutated. Tab sis, ob lub hetrozygote muaj ob lub noob rau cov xwm txheej tseem ceeb. Yog li, qhov no yog lwm qhov sib txawv ntawm compound heterozygote thiab ob chav heterozygote.
Summary – Compound Heterozygote vs Ob chav Heterozygote
Compound heterozygote muaj ob qhov sib txawv ntawm qhov sib txawv ntawm cov noob caj noob ces. Feem ntau ob alleles muaj qhov tsis zoo hauv cov tshuaj heterozygote. Yog li ntawd, nws ua rau mob hnyav dua kev kho mob phenotype. Nyob rau hauv sib piv, ob lub heterozygote yog ib tug neeg uas yog heterozygous ntawm ob gene loci. Ob chav heterozygote muaj ob lub noob rau cov xwm txheej tseem ceeb. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm qhov sib xyaw heterozygote thiab ob chav heterozygote.
