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.
Now DNA polymerase can copy the DNA strand. The DNA polymerase starts at the 3â end of the RNA primer, and, using the original DNA strand as a guide, begins to synthesize a new complementary DNA strand. Two polymerase enzymes are required, one for each parental DNA strand.