Dab tsi yog txoj cai genetic code ntawm complementary strand?
Dab tsi yog txoj cai genetic code ntawm complementary strand?

Video: Dab tsi yog txoj cai genetic code ntawm complementary strand?

Video: Dab tsi yog txoj cai genetic code ntawm complementary strand?
Video: Tshuaj theem vim li cas thiaj tau nqi ?/ Siv kho mob dab tsi?/paris polyphylla use for? 2024, Hlis ntuj nqeg
Anonim

Cov Genetic Code . Kev piav qhia ntawm Genetic Code : DNA yog ob- tso tseg molecule. Lwm tus, thiab ntxiv , txoj hlua yog hu ua coding strand los yog xav txoj hlua (muaj cov codons). Vim mRNA yog tsim los ntawm cov qauv txoj hlua , nws muaj cov ntaub ntawv tib yam li cov coding strand.

Ib yam li ntawd, dab tsi yog qhov txuas ntxiv ntawm DNA?

Hauv biology, tshwj xeeb hauv cov ntsiab lus ntawm noob caj noob ces thiab DNA , ntxiv txhais tau tias polynucleotide txoj hlua ua ke nrog tus thib ob polynucleotide txoj hlua muaj nitrogenous puag ib theem zuj zus uas yog rov qab ntxiv , los yog khub, ntawm lwm tus txoj hlua.

Ib tug kuj yuav nug, uas yog qhov sib ntxiv ntawm RNA? DNA thiab RNA puag khub complementarity

Nucleic Acid Nucleobases Base ntxiv
DNA adenine (A), thymine (T), guanine (G), cytosine (C) A = T, G≡C
RNA adenine (A), uracil (U), guanine (G), cytosine (C) A = U, G≡C

Hais txog qhov no, koj puas nyeem DNA ntawm 5 mus rau 3?

Thaum transcription, RNA polymerase nyeem tus qauv DNA strand hauv 3 '→ 5 ' kev taw qhia, tab sis lub mRNA yog tsim nyob rau hauv lub 5 'ua 3 'kev taw qhia. Cov codons ntawm mRNA nyeem ntawv ncej yog txhais nyob rau hauv lub 5 '→ 3 ' kev taw qhia rau hauv cov amino acids los ntawm ribosome los tsim cov saw hlau polypeptide.

Dab tsi yog qhov kev sib txuas ntxiv?

Complementary ib ntus : Nucleic acid ib ntus ntawm cov hauv paus uas tuaj yeem tsim cov qauv ob-stranded los ntawm kev sib piv cov hauv paus khub. Piv txwv li, lub complementary ib ntus rau C-A-T-G (qhov twg txhua tsab ntawv sawv cev rau ib qho ntawm cov hauv paus hauv DNA) yog G-T-A-C.

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