The variation that occurs in 13 predetermined sites scattered throughout the human genome can be used to identify individual people. This DNA profile is possible because .

DNA profile is the process of the DNA pattern of the individual and unique with the individual. The DNA profiling is used in case of any crime to find the suspect.

The DNA profile variation shows the scattering in the genome. This might occur due to the fact that the individuals have the same DNA sequence and they are located at the same location. This can be used to obtain the DNA  profile as the individuals have the different repeats that makes their profile unique.  

it's the cell cycle, but cytokines is when the cell divides.

theres 3 stages interphase,mitosis,and cytokines.

interphase prepares the cell for division.

mitosis is the process of dividing the cell,it has 4 parts interphase,anaphase,metaphase,and telophase.

lastly there's cytokines,that's when the cell divides into 2 daughter cells