Final answer:
No, DNA and RNA do not have an overall positive charge due to the phosphate groups.
Step-by-step explanation:
No, the statement is FALSE. DNA and RNA do not have an overall positive charge due to the phosphate groups. Each nucleotide in DNA and RNA is composed of a phosphate group, a sugar (ribose in RNA and deoxyribose in DNA), and a nitrogenous base. The phosphate group is negatively charged and contributes to the overall negative charge of DNA and RNA.