Video: Dab tsi DNA mus ua ke?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
Hauv DNA Adenine - Thymine thiab Guanine - Cytosine khub ua ke vim yog tsim ntawm hydrogen bonds ntawm ob lub hauv paus.
Yog li ntawd, dab tsi ua khub nrog hauv DNA?
Cov hauv paus yog cov "cov tsiaj ntawv" uas sau tawm cov cai ntawm caj ces. Hauv DNA , cov ntawv code yog A, T, G, thiab C, uas sawv cev rau cov tshuaj adenine, thymine, guanine, thiab cytosine, feem. Nyob rau hauv lub hauv paus khub, adenine ib txwm khub nrog thymine, thiab guanine ib txwm khub nrog cytosine.
Tsis tas li ntawd, cov nucleotides ua ke nrog ib leeg hauv DNA? Cov cai ntawm puag khub (los yog nucleotide pairing) yog: A nrog T: purine adenine (A) ib txwm ua khub nrog pyrimidine thymine (T) C nrog G: pyrimidine cytosine (C) ib txwm ua khub nrog purine guanine (G)
Raws li, dab tsi yog 4 lub hauv paus khub ntawm DNA?
Txuas rau txhua lub qab zib yog ib qho ntawm plaub hauv paus - adenine (A), cytosine (C), guanine (G), lossis thymine (T). Ob txoj hlua yog tuav ua ke los ntawm hydrogen bonds ntawm lub hauv paus , nrog adenine ua a pib khub nrog thymine, thiab cytosine tsim a pib khub nrog guanine.
Dab tsi ua rau DNA sib tw?
DNA yog coiled rau hauv chromosomes thiab nruj nreem ntim rau hauv lub nucleus ntawm peb cov hlwb. Cov twisting nam ntawm DNA yog qhov tshwm sim ntawm kev sib cuam tshuam ntawm cov molecules uas tsim DNA thiab dej. Cov nitrogenous bases uas muaj cov kauj ruam ntawm cov twisted staircase yog tuav ua ke los ntawm hydrogen bonds.
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