Now how does meiosis produce daughter cells that are genetically diverse? how is this important for sexual reproduction?

Yes They do. This benefits genetic diversity which Is essential to the survival of a species. It helps because offspring can be a mix of their mother and their father. Diminishing the possibility of hereditary diseases that run in one of their families.

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."