Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns

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Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns
Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns

Video: Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns

Video: Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns
Video: Qhov txawv ntawm Zaj Tshoob and Txiv Xaiv 2024, Lub Xya hli ntuj
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Qhov sib txawv tseem ceeb ntawm cov tshuaj ntxiv thiab cov qauv tsis muaj tshuaj tiv thaiv kab mob yog raws li cov txiaj ntsig uas nws tsim los ntawm phenotype. Hauv cov qauv caj ces ntxiv, ob qho alleles pab txhawb rau phenotype hauv qhov ntsuas tau, thaum nyob rau hauv cov qauv caj ces tsis zoo, tsuas yog ib qho allele pab txhawb rau phenotype los ntawm dominance lossis epistasis.

Ob qho tib si ntxiv thiab tsis yog cov qauv caj ces yog los ntawm kev tshawb fawb txog kev coj tus cwj pwm ntau yam raws li kev koom tes ntawm kev sib cuam tshuam yog ntsuas tau. Ob qhov xwm txheej no tseem ceeb hauv kev ua kom muaj kev hloov pauv hauv cov neeg.

Dab tsi yog Additive Genetic Patterns?

Ntxiv cov qauv caj ces tshwm sim los ntawm kev cuam tshuam ntawm alleles ntawm tib lub noob. Qhov kev cuam tshuam no txiav txim siab qhov kawg phenotype ntawm lub cev. Yog li ntawd, nyob rau hauv additive genetic qauv, ob alleles muaj ib tug cuam tshuam rau qhov kawg phenotype. Yog li, phenotype yuav yog qhov tshwm sim ntawm tag nrho cov txiaj ntsig ntawm ob qho alleles uas cuam tshuam. Cov alleles tuaj yeem muab tso rau hauv ib lossis ntau qhov gene loci. Tus nqi ntawm txhua tus allele pab rau qhov kawg phenotype yuav txawv. Yog li ntawd, cov kev sib txuas ua ke uas tshwm sim los ntawm cov qauv tshuaj ntxiv tuaj yeem sib txawv.

Nonadditive Genetic Patterns yog dab tsi?

Nonadditive genetic qauv yog los ntawm kev sib cuam tshuam ntawm cov noob. Cov kev sib cuam tshuam no yuav tshwm sim hauv tib lub chaw lossis ntawm qhov chaw sib txawv. Raws li qhov no, cov qauv caj ces tsis muaj peev xwm tshwm sim los ntawm qhov tshwm sim hu ua dominance lossis epistasis.

Dominance yog qhov tshwm sim thaum kev sib cuam tshuam tshwm sim ntawm tib loci. Hauv qhov xwm txheej no, ib qho allele yog qhov tseem ceeb tshaj lwm tus. Lub phenotype yuav ua raws li tus yam ntxwv imparted los ntawm dominant allele. Nyob rau hauv ob qho tib si homozygous dominant mob thiab heterozygous mob, qhov tseem ceeb allele yuav qhia. Lub recessive allele yuav qhia tsuas yog hais tias nws yog nyob rau hauv homozygous recessive mob.

Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns
Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns

Daim duab 02: Tsis muaj kab mob caj ces

Epistasis yog lwm hom kab mob uas tsis muaj tshuaj ntxiv. Hauv cov qauv no, kev sib cuam tshuam tshwm sim ntawm qhov chaw sib txawv, thiab cov phenotype yog tsim nyob rau hauv cov qauv nonadditive. Hauv qhov tshwm sim no, cov nyhuv ntawm ib qho allele yog hloov pauv los ntawm qhov thib ob allele los tsim cov qauv tsis muaj tshuaj tiv thaiv kab mob. Nonadditive genetic qauv tuaj yeem pom thaum txiav txim siab tib neeg cov plaub hau xim thiab kev txiav txim siab ntawm baldness.

Dab tsi zoo sib xws ntawm Additive thiab Nonadditive Genetic Patterns?

  • Nyob rau hauv ob qho tib si additive thiab nonadditive genetic qauv, muaj kev cuam tshuam ntawm noob los yog alleles.
  • Ob leeg ua rau muaj kev sib txawv ntawm cov pejxeem.
  • Ob leeg koom nrog kev kawm txog kev coj tus cwj pwm ntau yam.

Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns yog dab tsi?

Qhov sib txawv tseem ceeb ntawm cov qauv tshuaj ntxiv thiab tsis muaj tshuaj ntxiv yog qhov kev sib cuam tshuam ntawm allele. Hauv cov qauv caj ces ntxiv, ob qho alleles pab txhawb rau phenotype hauv qhov ntsuas tau, thaum nyob rau hauv cov qauv caj ces tsis zoo, tsuas yog ib qho allele pab txhawb rau phenotype los ntawm dominance lossis epistasis.

Hauv qab infographic tabulates qhov sib txawv ntawm cov qauv tshuaj ntxiv thiab tsis muaj tshuaj ntxiv.

Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns nyob rau hauv daim ntawv Tabular
Qhov txawv ntawm Additive thiab Nonadditive Genetic Patterns nyob rau hauv daim ntawv Tabular

Summary – Additive vs Nonadditive Genetic Patterns

Ntxiv thiab tsis yog cov noob caj noob ces piav qhia txog qhov ntau ntawm cov noob caj noob ces. Additive genetic qauv tshwm sim vim qhov additive los ntawm ob qho tib si alleles nyob rau hauv ib tug noob nyob rau hauv ntsuas sib txawv npaum li cas. Nyob rau hauv sib piv, nonadditive genetic qauv piav qhia txog cov nyhuv ntawm ib tug allele ntawm lub phenotype los ntawm dominance los yog epistasis. Yog li, qhov no yog qhov sib txawv tseem ceeb ntawm cov additive thiab nonadditive genetic patters. Txawm li cas los xij, ob qho tib si ua rau muaj kev hloov pauv hauv cov kab mob thiab cov pej xeem.

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