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.

C. The resulting DNA (two) have new DNA strand and old strand which is from original DNA molecule.

DNA replication is the procedure where a cell's whole DNA is duplicated or imitated. The recognizable proof of the DNA structure proposed that each strand of the twofold helix would fill in as a layout for combination of another strand. DNA replication procedure happens during the Synthesis (S) period of the eukaryotic cell cycle.  

As every DNA strand has the equivalent hereditary data, the two strands of the twofold helix can fill in as layouts for the multiplication of a corresponding new strand. The two coming about twofold helices, which each contain one "old" strand and one "new" strand of DNA, are indistinguishable from the underlying twofold helix.  

DNA replication is a semi-conservative in light of this procedure of replication, where the subsequent twofold helix is made out of both an old and new strand.