In Constructing Models,economists

question 306

Multiple Choice

In constructing models,economists

• A) leave out equations,since equations and models tend to contradict one another.
• B) ignore the long run,since models are useful only for short-run analysis.
• C) make assumptions that are contrary to features of the real world.
• D) try to include every feature of the economy.

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Definitions:

Fate Maps

Diagrams or maps that predict or trace the developmental fate of cells in embryos to show where they will end up and what they will become in the mature organism.

Morphogen Genes

Specific sequences of DNA that determine the relationship of structures during development; often expressed in a gradient across the embryo.

Cytoplasmic Segregation Routes

Cellular mechanisms involved in the distribution of cytoplasmic components between daughter cells during cell division.

Embryonic Signposts

Critical markers or events in the development of an embryo that guide the process of embryogenesis.