Which of the following statements is incorrect regarding an evolutionary trend?

1.  It is the continuous change of a character within an evolving lineage.
2.  The number of trends in any lineage is the same as the number of characters evolving.
3.  A trend may be progressive or retrogressive.
4.  Direction and speed of evolutionary trends in a lineage are universal throughout the family and are not subject to variations.

Subtopic:  Modern Theory of Evolution |
 70%

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Stabilizing selection acts to _________ in a species' population.
1. elaborate new traits
2. alter traits
3. push for directional change
4. maintain a certain phenotype

Subtopic:  Modern Theory of Evolution | Natural Selection |
 79%
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Given below is the representative evolutionary history of vertebrates through geological periods. A, B, C, and D, respectively, are:
  

1.  Dinosaurs, Thecodonts, Therapsids, and Pelycousurs
2.  Dinosaurs, Therapsids, Thecodonts, and Pelycosaurs
3.  Pelycosaurs, Therapsids, Thecodonts, and Dinosaurs
4.  Theraosids, Dinosaurs, Pelycosaurs, and Thecodonts
Subtopic:  Modern Theory of Evolution |
 76%
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The bones of forelimbs of whales, bats, cheetahs, and men are similar in structure, because:

1.  one organism has given rise to another
2.  they share a common ancestor
3.  they perform the same function
4.  they have biochemical similarities

Subtopic:  Modern Theory of Evolution | Concept of Speciation |
 89%
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