What are examples of theory ? i will mark to correct answers!

Theories such as evolution, the big bang,especially the pyramids being "built by aliens" are all theories. a theory is something that has not been proven right sort of like a hypothesis.

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."

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.