Uracil is the nitrogenous base found in RNA but not in DNA.
Dna primase and Dna polymerase
Answer: What are these for?
Explanation:
A DNA molecule is like a ladder because there are two sides (the sugar-phosphate backbones of the two strands) and rungs (each rung being a pair of complementary bases). Twisted, because the molecule is twined in a coil called a helix - or rather, a double helix because there are two strands.
Mitochondria should be the answer
