Read the scenario.

a graduate student is running a pcr reaction to study dna extracted from an egyptian mummy. the reaction does not seem to be working, so he checks his notes to see what he added to the reaction mix. he find the following list: mummy dna, dna polymerase, and dna nucleotides.

what is the error in the setup?

a. he forgot to add dna ligase.
b. he should have added dna ligase instead of dna polymerase.
c. he forgot to add primers.
d. he should have recognized that pcr cannot work on dna extracted from a mummy.