Which type of waves can be used to clear a blockage from small tubes in the kidneys? A: Sound waves and visible light B: X-rays and radio waves C: Radio waves and sound waves D: Visible light and X-rays

Dna replication is called semiconservative because a. no extra nucleotides are incorporated into the replicated dna molecules. b. both of the resulting dna molecules are composed of new strands of nucleotides. c. the two resulting dna molecules each have one new dna strand and one old strand from the original dna molecule. d. the sequence of nucleotides in one strand is conserved, whereas the new dna molecule consists of a unique sequence of nucleotides.