In What Year Did the U

question 19

Multiple Choice

In what year did the U.S. government enact both Medicare and Medicaid-two national health care programs receiving federal funding?

• A) 1945
• B) 1955
• C) 1965
• D) 1975

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Definitions:

Sympatric Speciation

The evolution of new species within a contiguous population that still has extensive gene flow.

Gametic Isolation

A type of prezygotic barrier where the gametes (egg and sperm) of two different species fail to unite or fertilize, preventing the formation of a zygote.

Hybrid Inviability

A postzygotic barrier where offspring resulting from the mating of two different species fail to survive to reproductive maturity.

Mechanical Isolation

A form of reproductive isolation where two species are prevented from interbreeding due to physical incompatibilities that prevent successful mating or fertilization.