A double-stranded DNA molecule has 120 base pairs overall. 120 thymine and 120 adenine molecules might make up this DNA molecule.
A double helix is the form that two strands of the macromolecule DNA take when they twist around a shared axis. The nitrogenous base pairs that make up the base pairs on the rungs and the alternating sugar and phosphate groups that make up the sides of the ladder give the double helix its ladder-like appearance. Each DNA strand is a polynucleotide made up of nucleotide-like building blocks. A sugar molecule, a phosphate group, and a nitrogenous base make up a nucleotide.
To know more about DNA molecule please click on the link brainly.com/question/19302583
#SPJ4
