What is the identity of the atom shown?
A) argon
B) bromine
C) chlorine
D) nitrogen

Identity of atoms are the following.

A) Argon: Atomic number of Argon is 18 which indicates that there are 18 protons present in their nucleus.

B) Bromine: Atomic number of bromine is 35 which means there are 35 number of protons present in the nucleus of bromine.

C) Chlorine: Atomic number of chlorine is 17 which shows there are 17 number of protons present in the center i. e. nucleus of chlorine atom.

D) Nitrogen: Atomic number of nitrogen is 7 which shows that 7 protons are present in nitrogen atom.

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."