Video: Dab tsi yog qhov sib lawv liag ntawm nitrogen hauv paus ntawm kev sib txuas DNA strand?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Plaub nitrogenous bases uas tsim lub caj qaum ntawm lub DNA khub nrog cov complementary puag khub zoo li adenine khub nrog thymine thaum lub cytosine khub nrog guanine.
Ua raws li qhov no hauv kev txiav txim siab, dab tsi yog qhov sib lawv liag ntawm cov hauv paus ntawm cov DNA sib txuas ntxiv?
Cov no hauv paus yog adenine (A), thymine (T), guanine (G) thiab cytosine (C). Cov nucleotides no tuaj ua ke los tsim cov saw ntev hu ua DNA strands . Ob complementary DNA strands kev sib raug zoo rau ib leeg nyob rau hauv zoo li ib tug ntaiv ua ntej winding rau hauv ob daim ntawv helix.
Tsis tas li ntawd, dab tsi yog qhov sib ntxiv DNA sib lawv liag? Ntxiv DNA (cDNA) yog tus DNA tsim los ntawm RNA template los ntawm kev ua ntawm reverse transcriptase (RNA-dependent DNA -polymerase). Cov ib ntus ntawm cDNA ua ntxiv rau RNA ib ntus.
Yog li ntawd, dab tsi yog qhov txuas ntxiv ntawm DNA?
npe Biochemistry. ob qho tib si ntawm ob chains uas ua ib tug ob helix ntawm DNA , nrog cov haujlwm sib xws ntawm ob txoj hlua khi tau tsim los ntawm ib khub ntawm ntxiv hauv paus. ib seem ntawm ib tug nucleic acid saw uas yog sib txuas mus rau lwm tus los ntawm ib theem ntawm lub hauv paus khub.
Dab tsi yog qhov sib ntxiv DNA ua ntu zus rau DNA strand Attgccgt?
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 |
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