Francis Crick, yog ib qho ntawm cov codiscoverers ntawm peb-dimensional ob helical qauv ntawm DNA, yog ib tug thawj coj hais tias ib tug gene yog ib tug linear sequence ntawm nucleotides ib theem zuj zus ntawm nucleotides Vim tias muaj plaub lub hauv paus tshwm sim nitrogenous, muaj plaub hom DNA nucleotides: adenine (A), thymine (T), guanine (G), thiab cytosine (C) … Raws li DNA polymerase txav mus rau hauv ib leeg-stranded DNA, nws siv qhov sib lawv liag ntawm nucleotides nyob rau hauv cov strand raws li ib tug qauv rau replication. https://www.nature.com › scitable › topicpage › the-order-of-…
Kev txiav txim ntawm Nucleotides hauv cov noob tau nthuav tawm los ntawm DNA Sequencing
thiab tias txhua tus noob encoded ib leeg protein.
Dab tsi ntawm genome encodes rau protein?
A noob yog ib txoj hlua ntawm DNA uas encodes cov ntaub ntawv tsim nyog los ua cov protein, uas tom qab ntawd mus ua qee yam haujlwm hauv peb lub hlwb.
Dab tsi encodes proteins nyob rau hauv ib lub cell?
A noob yog ib qho kev txiav txim ntawm nucleotides nyob rau ntawm ib txoj hauj lwm ntawm ib qho chromosome uas encodes ib qho kev ua haujlwm protein. Lub hauv paus tseem ceeb ntawm kev tsim noob neej uas nqa cov ntaub ntawv caj ces los ntawm ib tiam mus rau lwm tiam.
Yuav ua li cas cov noob code rau ib leeg protein?
Txhua cov protein yog coded los ntawm ib ntu ntawm DNA hu ua noob… Ua ke, kev sau thiab txhais lus yog hu ua gene expression. Thaum tus txheej txheem ntawm transcription, cov ntaub ntawv khaws cia nyob rau hauv ib tug noob DNA yog pauv mus rau ib tug zoo xws li molecule hu ua RNA (ribonucleic acid) nyob rau hauv lub cell nucleus.
Puas yog protein encoded los ntawm DNA?
Cov txheej txheem ntawm kev txhais lus tuaj yeem pom raws li kev txiav txim siab ntawm cov lus qhia ua cov protein, koom nrog mRNA hauv kev sau ntawv thiab tRNA. Cov noob hauv DNA encode protein molecules, uas yog "cov neeg ua haujlwm" ntawm tes, ua txhua yam haujlwm tsim nyog rau lub neej.
