Exam 23: Principles of Evolution

Threadlike and bloblike structures containing DNA and other organic molecules enclosed in a membrane are

Which of the following would NOT be included in the reaction chamber of an experiment intended to duplicate the atmosphere of ancient earth?

Which of the following organisms would you most likely expect to find preserved as a fossil?

New alleles arise by

Stone tools were first used by

All of the following are useful indicators of evolutionary relationships EXCEPT

Charles Darwin A) lived in New England.. B) studied to become a doctor. C) followed his avocation as a sailor. D) is identified with the concept of natural selection. E) sailed on the H.M.S. Bassett.

One part of Darwin's theory is that individuals with certain traits have an increased competitive edge. The source of these traits in individuals is due to

Changes in dentition of early primates accompanied

The belief that Homo erectus evolved along different paths in different regions based on local selection pressures is which model of evolution?

The vertebral column is represented by the letter ____.

Introduction of previously nonexistent genes into a population may be accomplished by

Modern humans evolved approximately ____ years ago.

The coccyx bone is represented by the letter ____.

The term reproductive isolation mechanism refers to

Which of the following is a grouping of related genera?

The small bone attached to the pelvic girdle is represented by the letter ____.

Complete reproductive isolation is evidence that what has occurred?

Organic compounds break down spontaneously in the presence of ____; hence, life probably never would have emerged if the ancient atmosphere had been the same as the present one.

The wrapping around an object movement that is performed by the hand is called