Two atoms have the same number of protons but a different number of neutrons. these atoms are:

a. electrons

b. radiation

c. molecules

d. isotypes

D. isotopes. Protons conclude what element the atom is. Different amounts of Neutrons concludes the type of isotopes

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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."