Answer:
Several basic steps are performed during DNA testing regardless of the type of test being done. The general procedure includes: 1) the isolation of the DNA from an evidence sample containing DNA of unknown origin, and generally at a later time, the isolation of DNA from a sample (e.g., blood) from a known individual; 2) the processing of the DNA so that test results may be obtained; 3) the determination of the variations in the DNA test results (or types), from specific regions of the DNA; and 4) the comparison and interpretation of the test results from the unknown and known samples to determine whether the known individual is not the source of the DNA or is included as a possible source of the DNA.
Explanation:
I'm assuming you mean tropes, and it's because the original story tellers used three, leading to story tellers after that to copy them and use the rule of three, and so it just became a normal thing.
"Tea on the Table" is an example of alliteration.
Answer:
The independent and dependent variables are:
Independent variable: m
Dependent variable: c