The staff unit should conduct Debriefing.
Debriefings are usually in small unit and crew activities, and this is in context
of a training shown to improve Knowledge, Skills, and Abilities (KSAs)
significantly when conducted formally using pre-defined measures of performance
derived from front-end analysis. Debriefings are very effective when conducted
actively between the person of the immersive activity and the assessment or observation
personnel.
Answer:
The answer is chromatin and chromosomes.
The main answer wold be diversity.
When you think about it, you only have a triplet code (which requires much less physical space than having all 64 possible codon combinations already present but either turned off or on). It makes much sense to have less actual physical compounds which can be combined in different ways (and a lot of ways) and produce the variety that can be required.