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.
Binding of the RNA polymerase at a specific site on DNA to be transcribed (A) is followed by unwinding of a region of the DNA helix and initiation of transcription in a 5â² to 3â² direction (B), producing an RNA transcript complementary to, and hydrogen-bonded with, the template strand of the DNA.