A gene encoding one of the protein involved in DNA replication has been inactivated by a mutation. In the absence of this protein, the cell can not replicate its DNA. It attempts to do it, unaware it will be for the last time. What DNA products would be generated if each of the following proteins were missing mutated one. (a) DNA Ploymerase, (b) DNS Ligase, (c) DNA Helicase, (d) Nuclease that removes RNA primers.