Base pairing in DNA is complementary.The purines (A and G) pair with the pyrimidines (T and C, respectively) to form equal-sized base pairs resembling rungs on a ladder (the sugar-phosphate backbones). The ladder twists into a double-helical structure.Scitable...
根据双链DNA分子（假设一条链为1链,另一条链为2链）的碱基互补配对原则,如总有、A1=T2 A2=T1 C1=G2 C2=G1可推出以下规律：①互补碱基两两相等,即A=T,C=G；②任意两个不互补配对的碱基之和相等,占碱基总量的50%,即A+G=C+T=50%或A+C=T+G=50%；③DNA分子的一条链上（A+T）/（...
其中胸腺嘧啶(thymine)一定会跟腺嘌呤(adenine)互相结合,胞嘧啶(cytosine)和鸟嘌呤(guanine)互相结合。这种结合方式就称为互补碱基对(complementary base pairing)。 刚才我们说的是两个单链连接成双链的方法。接下来我们来看一下每个单链的形成过程。过一个核苷酸的核糖都会跟后一个核苷酸中的磷酸根互相结合,键能比...
4. Explain the significance of complementary base pairing for replication, transcription and translation. [8 marks] 5. Explain the role of transfer RNA (tRNA) in the process of translation. [2 marks] Reference: Clegg, C.Biology for the IB Diploma(2nd ed.). Hodder Education....
对DNA和RNA都适用。碱基互补配对原则是指在DNA或某些双链RNA分子结构中，由于碱基之间的氢键具有固定的数目和DNA两条链之间的距离保持不变，使得碱基配对必须遵循一定的规律。这就是Adenine（A，腺嘌呤）一定与Thymine（T，胸腺嘧啶）配对，在RNA中与Uracil（U，尿嘧啶）配对，Guanine（G，鸟嘌呤）一定与...
that is responsible forcomplementary base pairingbetween nucleic acid strands (Figure 1). The carbon atoms of the five-carbon deoxyribose are numbered 1ʹ, 2ʹ, 3ʹ, 4ʹ, and 5ʹ (1ʹ is read as “one prime”). Anucleosidecomprises the five-carbon sugar and nitrogenous base. ...
This complementary base-pairing enables the base pairs to be packed in the energetically most favorable arrangement in the interior of the double helix. 这种互补碱基对使碱基对用大力最有利的安排在双螺旋结构的内部。 In this arrangement, each base pair is of similar width, thus holding the sugar-...
Complementary Base Pairing of Nitrogenous Bases Nitrogenous bases are organic molecules bound to nitrogen are building blocks of nucleotide monomers, which in turn forms DNA and RNA polymers. There are two groups of nitrogenous base...
■Two polynucleotide strands of the DNA is held by the hydrogen bonds between the complementary base pairing. Part 2.DNA replication ■Occurs during interphase before the cell division to ensure each daughter cell get correct amount of genetic material. ...