题目19. 含有稀有碱基比例较多的核酸是:()A. 胞核 DNAB. 线粒体 DNAC. tRNAD. mRNAE. CAMP19. 含有稀有碱基比例较多的核酸是:()A. 胞核 DNAB. 线粒体 DNAC. tRNAD. mRNAE. CAMP题目解答答案C. tRNA