Although Birds and Mammals Descended from Different Ancestors, They Both

question 33

Multiple Choice

Although birds and mammals descended from different ancestors, they both have a four-chambered heart. This is the result of

• A) the simplification of the cardiovascular system.
• B) the necessity for rapid movement of blood.
• C) convergent evolution.
• D) genetic aberrations that resulted from mistakes in somatic cell division.

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Definitions:

Thaddeus Stevens

A nineteenth-century U.S. politician and fierce advocate for the abolition of slavery and leader in the effort to implement Reconstruction policies aimed at securing rights for freed slaves.

Civil Rights Bill

The Civil Rights Bill usually refers to legislation aimed at enforcing or furthering civil rights, such as the U.S. Civil Rights Act of 1964 which outlawed discrimination based on race, color, religion, sex, or national origin.

1866

A year marked by significant events such as the passing of the Civil Rights Act in the United States, attempting to protect the rights of African Americans.

American Citizens

Individuals who hold citizenship in the United States, entitled to its rights and bound by its laws.