A scientific idea is a statement which explains how nature and its events take place.
The scientific idea is considered more valid and reliable than other imaginative ideas as they are mostly based on the evidence. The scientific ideas can also change with time if new evidence support or do not support the idea.
Since in the given question, the option based on the evidence where the evidence supports the idea whereas another scientist does not agree with this will be considered the answer which will lead to the modification of the scientific idea.
Once you have obtained your salmon sample from a local store, you need to isolate the DNA from it and make many copies of the COI gene using the polymerase chain reaction (PCR).
