Although these molecules are only 21 to 25 base pairs in length ... This RNA-containing complex can then inhibit transcription of an mRNA molecule that has a sequence complementary to its RNA ...

The mRNA then travels to the ribosome ... The rules for wobble base pairing are as follows: The first two bases of a codon always form standard Watson-Crick base pairs with the corresponding bases of ...

What's the difference between mRNA and pre-mRNA? It's all about splicing of introns. See how one RNA sequence can exist in nearly 40,000 different forms.

U base pairs with A. Because the opposite base bonds with the exposed DNA bases, the strand of mRNA is an opposite copy of the DNA strand (except that U replaces T). We call this a complementary copy.

During DNA replication, the complementary base pairing ensures faithful copying of the genetic material. In RNA, cytosine also pairs with guanine. However, RNA is typically single-stranded and serves ...