Final answer:
Different normalization in the calculation of long-term evolutionary dynamics considers relative fitness. Relative fitness 2 can be held constant over generations, while relative fitness 1 depends on changing relative frequencies and cannot be held constant.
Step-by-step explanation:
The different normalization in the calculation of long-term evolutionary dynamics refers to the consideration of relative fitness. In simple models, relative fitness 2 can be held constant over generations because it does not depend on the changing relative frequencies of the given types. On the other hand, relative fitness 1 depends on the changing relative frequencies and therefore cannot be held constant.