Qhov sib txawv tseem ceeb ntawm homozygous thiab heterozygous yog homozygous txhais tau hais tias ob qho tib si alleles zoo ib yam thaum heterozygous txhais tau hais tias ob qho alleles txawv rau qhov zoo.
Cov noob caj noob ces los ntawm niam txiv chromosomes tswj tag nrho cov cim lossis cov yam ntxwv ntawm cov tsiaj, nroj tsuag, thiab tag nrho lwm yam tsiaj. Nws yog qhov laj thawj tseem ceeb rau kev qhia niam txiv yam ntxwv hauv cov menyuam yaus. Feem ntau cov kab mob eukaryotic muaj ob pawg ntawm cov noob hu ua niam txiv thiab niam txiv. Yog li, qhov xwm txheej ntawm caj ces yog hu ua diploid (ob pawg ntawm chromosomes). Qhov ntawd txhais tau tias; tag nrho cov yam ntxwv muaj caj ces los ntawm leej niam thiab leej txiv. Txawm li cas los xij, cov noob no tuaj yeem yog qhov tseem ceeb lossis rov ua dua ib leeg thiab qhov ntawd yog qhov uas homozygous thiab heterozygous yam ntxwv ua qhov tseem ceeb. Homozygous yog ib lub xeev uas muaj ob qho tseem ceeb alleles (AA) los yog ob tug recessive alleles (aa) thaum heterozygous yog ib lub xeev uas muaj ib tug tseem ceeb allele thiab ib tug recessive allele (Aa).
Homozygous yog dab tsi?
Homozygous noob muaj ob hom zoo sib xws ntawm niam txiv thiab niam txiv. Txawm li cas los xij, cov cim tseem ceeb thiab tsis zoo yog qhov tseem ceeb los xav txog. Piv txwv li, thaum ib tug me nyuam tau txais ib qho tseem ceeb allele (S) los ntawm leej niam thiab tib hom dominant allele (S) los ntawm leej txiv, tus me nyuam yog homozygous dominant (SS) rau qhov tshwj xeeb. Ib yam li ntawd, yog cov alleles tau txais los ntawm leej niam thiab leej txiv yog ob qho tib si recessive, qhia los ntawm cov ntaub ntawv qis 's', ces tus me nyuam yog homozygous recessive (ss) rau qhov tshwj xeeb. Yog li ntawd, homozygous genotypes tuaj yeem muaj ob qho tseem ceeb lossis ob qho kev cuam tshuam.
Daim duab 01: Homozygous
Qhov xwm txheej 'SS' yog lub npe hu ua homozygous genotype tseem ceeb thaum qhov 'ss' qhov xwm txheej yog homozygous genotype recessive. Lub homozygous genotype tseem ceeb qhia txog cov phenotypes tseem ceeb thaum cov homozygous genotype recessive qhia txog cov phenotype.
Heterozygous yog dab tsi?
Heterozygous genes muaj ntau hom noob rau ib qho phenotype. Qhov ntawd txhais tau tias; cov genetic pleev ntawm ib tug tshwj xeeb cim los yog phenotype tsis muaj xws li cov noob caj noob ces. Muaj ob hom noob caj noob ces uas yog qhov tseem ceeb thiab rov ua dua. Yog li ntawd, heterozygous genotypes los yog alleles muaj ib tug tseem ceeb gene nrog ib tug recessive noob lub luag hauj lwm rau ib tug tshwj xeeb cim. Txawm li cas los xij, nyob rau hauv cov ntaub ntawv ntawm heterozygous genotype, tsuas yog cov noob tseem ceeb tau qhia tias yog phenotype; tus yam ntxwv sab nraud pom lossis ua haujlwm zoo.
Daim duab 02: Heterozygous
Tsis muaj txoj cai hais tias cov noob tseem ceeb yuav tsum los ntawm niam txiv lossis niam txiv noob; Yog li, txhua hom kev nthuav qhia (txawm yog cov tseem ceeb lossis cov noob caj noob ces) tuaj yeem tau txais los ntawm leej niam leej txiv. Yog tias qhov tseem ceeb gene 'S' los ntawm ib niam txiv khub niam txiv nrog cov noob 's', ces tus xeeb ntxwv yuav yog heterozygous (qhia raws li 'Ss'). Tom qab ntawd, tsuas yog cov noob tseem ceeb 'S' yuav raug qhia, ua tus thawj tswj hwm cov noob 's'.
Dab tsi zoo sib xws ntawm Homozygous thiab Heterozygous?
- Homozygous thiab heterozygous yog ob lub xeev ntawm genotypes.
- Ob lub xeev muaj ob lub alleles.
- Tsis tas li, lawv nyob ntawm tib qhov chaw ntawm homologous chromosomes.
Qhov txawv ntawm Homozygous thiab Heterozygous yog dab tsi?
Homozygous genotype muaj tib hom genes lub luag haujlwm rau ib qho phenotype whereas heterozygous genotype muaj ib qho tseem ceeb gene nrog ib tug recessive gene nyob rau hauv lub diploid genetic teeb. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm homozygous thiab heterozygous. Tsis tas li ntawd, muaj ob hom homozygous genotypes ua homozygous tseem ceeb thiab homozygous recessive. Ntawm qhov tod tes, heterozygous genotype muaj tsuas yog ib hom. Li no, qhov no kuj yog qhov sib txawv ntawm homozygous thiab heterozygous. Hauv homozygous genotypes, muaj ob hom phenotypes qhia thaum tsuas yog ib hom qhia hauv heterozygous genotypes.
Cov infographic hauv qab no nthuav qhia ntau ntxiv txog qhov sib txawv ntawm homozygous thiab heterozygous.
Summary – Homozygous vs Heterozygous
Cov kab mob Diploid muaj ob pawg chromosomes; ib daim ntawv yog los ntawm lub qe thiab lwm daim ntawv yog los ntawm cov phev. Ib yam li ntawd, txhua tus noob muaj ob daim ntawv hloov pauv lossis alleles. Yog tias ob qho alleles sib phim nrog ib leeg, peb hu nws homozygous rau qhov zoo. Tsis tas li ntawd, muaj ob hom homozygous xeev: ob qho tseem ceeb alleles los yog ob lub recessive alleles. Hauv qhov sib piv, yog tias ob qho alleles tsis sib xws, peb hu nws heterozygous rau qhov zoo. Nws yog lub xeev uas muaj ib qho tseem ceeb allele thiab ib qho recessive allele. Yog li, qhov no yog cov ntsiab lus ntawm qhov sib txawv ntawm homozygous thiab heterozygous.
