What cranial nerve innervates the back third of the tongue to integrate perception of taste?

The vagus nerve

Explanation:

The vagus nerve is one of the 3 major cranial nerves involved in taste. The vagus nerve carries taste information from the back part of the mouth.

c.) polymerase chain reaction

- "unlike the original dna fingerprinting method, dna profiling does not use restriction enzymes to cut the dna. instead it uses the polymerase chain reaction (pcr)? to produce many copies of specific str sequences. pcr is an automated procedure that generates lots of copies of a specific sequence of dna."