Economic Theories Are

question 87

Multiple Choice

Economic theories are

• A)useful because they are as exact as theories in the physical sciences
• B)useless because they are based on abstractions
• C)useful because they allow us to make predictions
• D)too complex to understand because they include all of reality
• E)useful in predicting events only if their assumptions are realistic

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Definitions:

Mutation-Selection Balance

An equilibrium state between the introduction of new genetic mutations and the removal of maladaptive ones by natural selection.

Equilibrium Frequency

A stable frequency at which a genetic allele is maintained within a population without the influence of external forces, typically as a result of evolutionary pressures.

Phenotype

Phenotype is an observable, measurable characteristic of an organism. A phenotype may be a morphological structure (for example, antlers, muscles), a developmental process (for example, learning), a physiological process or performance trait (for example, running speed), or a behavior (for example, mating display). Phenotypes can even be the molecules produced by genes (for example, hemoglobin). Genes interact with other genes and with the environment during the development of the phenotype.

Genotype

The genetic makeup of an organism that determines its specific traits, often in contrast to its observable characteristics (phenotype).