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Dab tsi molecules ua rau uprights ntawm dna?

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Dab tsi molecules ua rau uprights ntawm dna?
Dab tsi molecules ua rau uprights ntawm dna?

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Video: Dab tsi molecules ua rau uprights ntawm dna?
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Anonim

A DNA molecule yog "ladderlike" nyob rau hauv cov duab.

DNA ua yog dab tsi?

Lawv tau pom tias alternating deoxyribose thiab phosphate molecules tsim cov twisted uprights ntawm DNA ntaiv. Lub rungs ntawm tus ntaiv yog tsim los ntawm cov khub sib txuas ntawm nitrogen hauv paus - Ib txwm ua nrog T thiab G ib txwm ua nrog C.

Yuav ua li cas molecules tsim cov rungs?

Ntxhais ntaiv yog khub 4 hom nitrogen bases. Ob lub hauv paus yog purines- adenine thiab guanine. Cov pyrimidines yog thymine thiab cytosine.

Cov molecules dab tsi ua rau DNA molecule?

DNA yog ib hom kab molecule uas muaj plaub hom tshuaj me me hu ua nucleotide bases: adenine (A), cytosine (C), guanine (G), thiab thymine (T).

Yuav ua li cas ob lub molecules ua lub uprights quizlet?

Nyob rau hauv deoxyribose thiab phosphoric acid molecule Zoo li tsim rau sab lossis uprights ntawm tus ntaiv.

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