The Branching "Tree of Life" Analogy

question 58

Multiple Choice

The branching "tree of life" analogy

• A)does not describe ecological interactions between species,so it should be replaced by the web of life.
• B)has been discredited because it does not help us understand evolutionary relationships among organisms.
• C)accurately reflects evolution.Once a split occurs,species on different branches evolve absolutely independently.
• D)fails to account for horizontal gene transfer,in which species on different branches exchange genes.

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Definitions:

Ghetto

Historically, a section of a city in which members of any minority group live because of social, legal, or economic pressure.

Social Security Benefits

Government program providing financial assistance to people with inadequate or no income, especially the elderly, disabled, and survivors.

Federal Government

A system of government where powers and responsibilities are divided between a national government and smaller administrative units, often including states or provinces.

Welfare

Governmental support aimed at ensuring the basic well-being of citizens, including provisions for health, education, and financial security during unemployment, sickness, or disability.