Answer:
Polymerase chain reaction (PCR) test is used to duplicate traces of DNA from any living form, for identification purposes. The correct sequence is 1, 3, 2; based on the options given.
Explanation:
The steps to be followed for the PCR procedure are:
<em>Denaturation</em>
Option 1. Involves incubation at 94°C to denature DNA strands into single strands by breaking of weak hydrogen links
<em>Annealing</em>
Option 3. Temperature is lowered to 60°C to allow primers joining their similar DNA sequences.
<em>Elongation</em>
Option 2. Incubate at 72°C to promote the extension of the DNA strands, actually extending them.
B. a form of gene is the correct answer
The answer would be c i think hope i could help
<span>The introduction of an unpleasant or painful stimulus, or the removal of a desirable stimulus, can be use to decrease the probability that a preceding behavior will occur in the future can be classified as punishment. This is a behavior modification which is a technique that is use to promote desirable behavior and lessen undesirable behavior.</span>
