Dab tsi yog qhov txawv ntawm purines thiab pyrimidines?
Dab tsi yog qhov txawv ntawm purines thiab pyrimidines?

Video: Dab tsi yog qhov txawv ntawm purines thiab pyrimidines?

Video: Dab tsi yog qhov txawv ntawm purines thiab pyrimidines?
Video: Qhov Sib Txawv Ntawm Allergy, Flu & Coronavirus Yog Dab Tsi 2024, Kaum ib hlis
Anonim

Cov purines hauv DNA yog adenine thiab guanine, tib yam li hauv RNA. Cov pyrimidines hauv DNA yog cytosine thiab thymine; hauv RNA, lawv yog cytosine thiab uracil. Purines loj dua pyrimidines ua vim lawv muaj ob-ntiv nplhaib qauv thaum pyrimidines ua tsuas muaj ib lub nplhaib xwb.

Yog li ntawd, purines thiab pyrimidines txawv li cas?

Purines thiab Pyrimidines yog cov hauv paus nitrogenous uas ua rau ob yam sib txawv ntawm nucleotide hauv DNA thiab RNA. Ob-carbon nitrogen nplhaib hauv paus (adenine thiab guanine) yog cov purines , thaum ib-carbon nitrogen nplhaib hauv paus (thymine thiab cytosine) yog pyrimidines ua.

Ib sab saum toj, vim li cas purines yuav tsum ua ke nrog pyrimidine? Teb thiab piav qhia: Purines ua ke nrog pyrimidines ua vim tias lawv ob leeg muaj nitrogenous hauv paus uas txhais tau hais tias ob qho tib si molecules muaj complementary lug uas ua

dab tsi ib txwm muaj purine lossis pyrimidine?

Adenine thiab guanine yog cov purines , thaum thymine, cytosine, thiab uracil yog pyrimidines ua . Hauv DNA molecule, a pyrimidine puag ib txwm ua khub a tshuaj purine puag. Cov pyrimidine adenine ib txwm khub nrog cov tshuaj purine thymine, thiab cov pyrimidine guanine ib txwm khub nrog cov tshuaj purine cytosine.

Dab tsi yog 2 lub hauv paus ntawm purines?

Ob lub Purines yog Adenine thiab Guanine. Ob Pyrimidines yog Thymine thiab Uracil.

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