Hypernyms (to doodle is one way to...): draw (represent by making a drawing of, as with a pencil, chalk, etc. on a surface). Doodle entails doing...: delineate; describe; draw; line; trace (make a mark or lines on a surface).
DNA polymerases can only extend a DNA strand in a 5â² to 3â² direction, different mechanisms are used to copy the antiparallel strands of the double helix. In this way, the base on the old strand dictates which base appears on the new strand.
There are three stages that make up DNA transcription. First, DNA is transcribed by an enzyme called RNA polymerase. Then, transcription factors elongate the DNA strand and allow RNA polymerase to transcribe only a strand of DNA into a RNA polymer called messenger RNA. Finally, RNA polymerase continues along the DNA until it reaches what is called a terminator sequence.