Final answer:
It is true that adjustments can be done for any population characteristics, as adaptations and traits can evolve through mechanisms like natural selection and genetic drift, affecting a population's genetic makeup over time.
Step-by-step explanation:
The question relates to evolutionary biology and asks whether an adjustment can be done for any population characteristics. The statement is true, as adaptations and population characteristics, including demographic traits such as birth rates and death rates, among others, can evolve. These changes in allele frequencies and phenotype distributions are part of the process of evolution, driven by natural selection, genetic drift, mutation, migration, and the impact of various environmental factors. For example, the r- and K-selection model shows how life-history traits can evolve to favor either rapid population growth or stability near the population's carrying capacity. The Hardy-Weinberg principle also supports this understanding by providing a baseline for scientists to detect evolutionary changes within a population.