Neutrons and *blank* are found in the nucleus of an atom

Protons.

Explanation:

The different structure of the atoms are discovered by the different scientists to explain the atom structure. Three sub atomic particles of the atom are electron, proton and neutron.

The electrons revolve around the nucleus in the fixed orbit. The protons and neutrons are present inside the nucleus of the atom. The protons and electrons are equal in the atom.

Thus, the answer is proton.  

ans.

dna fingerprinting is defined as a process that determines the dna characteristics of an individual. these dna characteristics are unique among individuals as their fingerprints, so it is known as dna fingerprinting.

steps of dna fingerprinting includes extraction of dna from sample, amplification of dna, restriction digestion of amplified dna, and then analysis of dna by gel electrophoresis, respectively.

thus, the next step performed by the scientist is 'to cut the amplified dna (obtained by polymerase chain reaction) by restriction enzymes that cleave the dna into fragments and their analysis.'