After reading the paragraph below, answer the questions that follow.
Desert pupfish live in springs of the American Southwest. Today, there are about 30 species of pupfish, but they all evolved from a common Pleistocene ancestor. The southwestern United States was once much wetter than it is now, and the Pleistocene pupfish flourished over a wide geographic area. Over thousands of years, however, the Sierra Nevada mountain range was pushed upward by geological forces, blocking rainfall from the Pacific Ocean. As the large lakes dried up, small groups of pupfish remained in springs and pools fed by groundwater seepage. Now, although many of these small springs still have pupfish, each population, through evolution, has become very different from populations of pupfish in other springs.
The variation in gene pools among the 30 pupfish populations occurred through an evolutionary mechanism called
◦ Hardy-Weinberg equilibrium.
◦ the bottleneck effect.
◦ directional selection.
◦ random mating.
Barton Springs Salamander
Set the meter to read ohms (V) and measure the resistance of the relay coil. The usual reading for ...
Geese continued to follow a human around assuming their actual mothers
Use the answer sheet below the problems for your answer
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MATH ODDS AND PROBABILITY PLEASE ANSWER THE PICTURE