______ biologist advancing understanding of the role of microRNAs in the development of cancer. A: Molarity B: Molecular C: Melodious D: Melanin

内源性产生的小分子RNA称为microRNAs，外源性转入细胞的小分子RNA称为siRNA

Coding sequence of microRNAs may be present in the introns of split gene, and it can also exist in the intergenic non-coding regions. A: 正确 B: 错误

microRNAs的编码序列既可以存在于断裂基因的内含子区域，也可以存在于基因间的非编码区