Replication relies on complementary base pairing, uas yog lub hauv paus ntsiab lus piav qhia los ntawm Chargaff txoj cai: adenine (A) ib txwm khi nrog thymine (T) thiab cytosine (C) ib txwm khi nrog guanine (G).
DNA adenine bond nrog dab tsi?
Adenine. Adenine (A) yog ib qho ntawm plaub lub hauv paus hauv DNA, nrog rau lwm qhov peb yog cytosine (C), guanine (G), thiab thymine (T). Nyob rau hauv lub DNA molecule, adenine bases nyob rau ntawm ib tug strand daim ntawv cog lus tshuaj nrog thymine bases ntawm qhov opposite strand.
Dab tsi yog adenine ib txwm ua khub nrog thaum DNA rov ua dua?
In base pairing, adenine ib txwm khub nrog thymine, thiab guanine ib txwm ua khub nrog cytosine.
Dab tsi khi rau DNA thaum rov ua dua?
Tus primer ua raws li qhov pib ntawm DNA synthesis. DNA polymerase? khi rau txoj hlua ua ntej thiab tom qab ntawd 'taug kev' raws nws, ntxiv cov tshiab ntxiv? nucleotide? bases (A, C, G thiab T) mus rau strand ntawm DNA nyob rau hauv 5' mus rau 3' kev taw qhia. Qhov kev hloov pauv no yog hu ua txuas ntxiv.
Yuav ua li cas khi rau DNA strands kom lawv sib cais?
Proteins hu ua single-strand binding proteins tsho tiv thaiv cov kab sib cais ntawm DNA ze ntawm rab diav rawg, ua kom lawv tsis txhob rov los ua ke rau hauv ob lub helix.
