Vim li cas adenine ua ke nrog thymine?
Vim li cas adenine ua ke nrog thymine?

Video: Vim li cas adenine ua ke nrog thymine?

Video: Vim li cas adenine ua ke nrog thymine?
Video: 3.4 To Be & Tenses-Qhia Txog Los Lus Yog thiab Cov Siv Hawm 2024, Kaum ib hlis
Anonim

Adenine thiab Thymine Kuj tseem muaj qhov kev teeb tsa zoo rau lawv cov ntawv cog lus. Lawv ob leeg yuav tsum muaj -OH/-NH pawg uas tuaj yeem tsim cov txuas hniav hydrogen. Thaum ib khub Adenine Nrog Cytosine, ntau pawg yog nyob rau hauv txhua txoj kev. Rau lawv txoj kev sib raug zoo nrog ib leeg yuav yog qhov tsis zoo.

Ib yam li ib tug yuav nug, vim li cas adenine ib txwm ua ke nrog thymine?

Qhov no yog vim qhov Adenine (purine puag) khub tsuas yog nrog cov Thymine (pyrimidine puag) thiab tsis nrog Cytosine (purine puag). Lub hauv paus ua khub ua raws li Erwin Chargaff cov cai. Nws yog lub hauv paus ntsiab lus ntawm noob caj noob ces ntawm molecular biology uas peb txhua tus kawm. Qhov ntawd yog Adenine daim ntawv cog lus nrog thymine thiab guanine nrog cytosine.

Tsis tas li ntawd, vim li cas thiaj yuav tsum tau ib khub purine nrog pyrimidine? Kev piav qhia: Ua khub ntawm ib qho tshwj xeeb tshuaj purine rau a pyrimidine yog vim cov qauv thiab cov khoom ntawm cov hauv paus. Sib piv puag khub ( cov purines thiab pyrimidines ua ) tsim hydrogen bonds. A thiab T muaj ob qhov chaw uas lawv tsim hydrogen bonds rau ib leeg.

Ntxiv rau qhov no, vim li cas thiaj li muaj kev sib koom ua ke hauv paus?

Complementary Base Pairing Koj pom, cytosine ua tau tsim peb hydrogen bonds nrog guanine, thiab adenine ua tau tsim ob daim ntawv cog lus hydrogen nrog thymine. Los yog, yooj yim dua, C daim ntawv cog lus nrog G thiab A daim ntawv cog lus nrog T. Nws yog hu ua complementary puag khub vim cwb puag tau tsuas yog daim ntawv cog lus nrog ib qho tshwj xeeb puag tus khub.

Adenine ua ke nrog dab tsi?

Cov hauv paus yog cov "cov tsiaj ntawv" uas sau tawm cov cai ntawm caj ces. Hauv DNA, cov ntawv cim yog A, T, G, thiab C, uas sawv cev rau cov tshuaj adenine, thymine , guanine , thiab cytosine , raws. Hauv DNA puag khub, adenine ib txwm ua nrog thymine , thiab guanine ib txwm ua khub nrog cytosine.

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