What is true about the expiration dates of medications?

Most medication does not go bad, but it is most effective by that date.

Explanation:

For the most part ingredients do not expire, but to get the best out of your medication it is best to follow the expiration guidelines

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."

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.