Video: Dab tsi yog kev sib raug zoo ntawm alleles thiab noob?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A noob yog ib feem ntawm DNA uas txiav txim siab ib yam dab tsi. Ib allele yog ib daim ntawv tshwj xeeb ntawm a noob . Cov noob muaj lub luag haujlwm rau kev nthuav qhia ntawm qhov zoo. Alleles yog lub luag hauj lwm rau cov variations nyob rau hauv uas ib tug muab kev zoo yuav qhia tau hais tias.
Ib yam li ntawd, kev sib raug zoo ntawm DNA noob thiab alleles yog dab tsi?
DNA yog teem rau ntawm chromosomes hauv ntu hu ua noob . Ib noob qhia lub cell yuav ua li cas ua ib qho protein. Txawv variations ntawm a noob hu ua alleles . Txhua tus niam txiv dhau ib qho allele rau tus me nyuam rau txhua tus noob.
Qhov thib ob, kev sib raug zoo ntawm cov noob caj noob ces yog dab tsi? Cov Kev sib raug zoo ntawm Genes , Proteins, thiab Cov yam ntxwv A noob cov lis dej num rau cov protein tshwj xeeb uas koom nrog hauv kev qhia ntawm a qhov zoo . Cov yam ntxwv txiav txim los ntawm ib leeg noob hu ua Mendelian yam ntxwv.
Tsis tas li ntawd, qhov txawv ntawm alleles thiab noob yog dab tsi?
A noob yog ib tug stretch ntawm DNA los yog RNA uas txiav txim siab ib yam dab tsi. Cov noob hloov pauv thiab tuaj yeem nqa ob lossis ntau dua lwm daim ntawv; ib allele yog ib daim ntawv no ntawm a noob . Chromosomes tshwm sim hauv khub yog li cov kab mob muaj ob alleles rau txhua tus noob -ib allele hauv txhua chromosome hauv khub.
Allele yog dab tsi thiab nws cuam tshuam li cas rau chromosome ib lub noob thiab qhov zoo?
Allele . Ib allele yog ib qho txiaj ntsig DNA (deoxyribonucleic acid) coding uas occupies ib qhov chaw (txoj hauj lwm) ntawm ib chromosome . Feem ntau yog alleles sequences uas code rau a noob , tab sis qee zaum lo lus siv rau xa mus mus rau qhov tsis- noob ib ntus. Ib tus neeg lub genotype rau qhov ntawd noob yog lub teeb ntawm alleles nws tshwm sim muaj.
Pom zoo:
Dab tsi yog txhais los ntawm cov noob tseem ceeb thiab cov noob caj noob ces?
(Nyob rau hauv cov ntsiab lus ntawm caj ces, ib qho tseem ceeb tshaj plaws yog ib qho uas yog phenotypically qhia hauv heterozygotes). Ib qho tseem ceeb tshaj plaws yog tawm tsam qhov tsis zoo uas tshwm sim tsuas yog thaum muaj ob daim ntawv theej ntawm cov noob. (Nyob rau hauv cov ntsiab lus genetic, ib tug recessive zoo yog ib tug uas yog phenotypically qhia tsuas yog nyob rau hauv homozygotes)
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