The strictest of the systematisists
A. Phenetics
B. Traditionalists
C. Cladists
D. all are equal
Ans: C. Cladists
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Four of the five time periods listed below represent
milestones in the evolution of life on Earth. Select the exception. a. 12 to 15 billion years ago b. 3.2 billion years ago c. 2.1 billion years ago d. 570 million years ago e. 200 million years ago
When you are scared or cold and turn pale it is because the ________ in your skin are constricting.
A. arteries B. veins C. capillaries D. venules E. arterioles
Rings of the protein _______ in the pericentriolar material nucleate microtubule assembly
a. centrin b. pericentrin c. alpha-tubulin d. gamma-tubulin e. beta-tubulin
A mountain range along the coast of a continent is located perpendicular to the prevailing sea breeze. Which one of the following describes an area where the rain shadow is located?
A. On the leeward side of the mountain where warm, moist air is descending B. On the windward side of the mountain where cool, dry air is rising C. On the windward side of the mountain where warm, moist air is rising D. On the leeward side, far inland from the mountain E. On the leeward side of the mountain where cool, dry air is descending