Answer:
A dog breeder breeds a brown dog and a black dog and all the puppies are brown.
Explanation:
This is because of the Mendelian inheritance order of characteristics. In all other example, there are several other things that don't align with this order like gender variability, specie variability etc.
All the puppies are brown and this shows proper and complete dominance in accordance with the law...
Building models doesn't actually help scientists observe phenomena. Scientists build models to describe how nature and systems operate then make observations to see if their models match what they observe. Models which don't match what they observe are either alterated or scrapped. Good models are kept and used by the scientific community.