Heterochromatin has shown to be composed largely of short repeated polynucleotide sequences . 异染色质大部分是由短而重复的多核苷酸序列所组成的。
3.
Polynucleotide chains and base pairs 聚核苷酸链和双基座
4.
The building block of all lifeforms on earth is the deoxyribonucleic acid . it has the shape of a double helix in which two polynucleotide chains are coiled about each other in a spiral 而组成地球上所有生命的基本单位去氧核糖核酸dna的双螺旋结构也是非对称地存在的，原来自然界中的去氧核糖核酸绝大部分都是右旋的。
5.
The building block of all lifeforms on earth is the deoxyribonucleic acid ( dna ) . it has the shape of a double helix in which two polynucleotide chains are coiled about each other in a spiral 而组成地球上所有生命的基本单位去氧核糖核酸( dna )的双螺旋结构也是非对称地存在的，原来自然界中的去氧核糖核酸绝大部分都是右旋的。
6.
The ere oligonucleotides were chemically synthesized , annealed , and labeled at the 5 " - ends by polynucleotide kinase and r - 32p atp ( 3000 ci / mmol ) . for competed experiment the 400 fold molar excess of the cold ere oligonucleotides were added to reaction mixture 结论: 100一140m盯kg浓度的atra可以诱导大鼠骨骼畸形发育并产生ccf ; igfs家族基因中igf一2和igfbp一6表达的调控与大鼠骨骼发育以及成骨细胞的增殖密切相关。
