Note

Suggested Solution

It is suggested to store the information in the Sample class as a new attribute. The method take_analysis_result(…) should be extended to accept the serial number of the DnaSequencer as a parameter. In conjunction, the analyze_sample(…)-method must be changed to also pass in the serial number when calling take_analysis_result(…). Since all subclasses of DnaSequencer call upon the superclass implementation, there is no need to actually change them.