branch characters造句

• This vector , including sbe2b gene , was 6 . 06kb long , containing endosperm specific promoter and a intron that enhanced the transcript efficiency . both sense and antisense cdna were transformed to upregulate and downregulate amylose content and relative branching characters
  正向连接的表达载体用于增加胚乳中支链淀粉的含量，反向连接用于减少胚乳中支链淀粉的含量，增加直链淀粉的含量。