Complete the chart below to indicate which occurrences would provide barriers sufficient for possible speciation of the organism. Change in ecosystem Effect on reproduction A mountain river is dammed to produce hydroelectric energy. This separates a population of bull trout. Answer1 A remote hiking trail with limited foot traffic is home to many elk. The trail is expanded to allow for hikers to cross a stream by building a bridge. Answer2 One sample of frog lays its eggs in shallow water at a pond's edge. Another frog sample in the same area digs a hole near the pond to lay its eggs. Answer3 One sample of swallow (a bird) uses grasses and mud to build a nest, and another sample uses twigs. Answer 4   Answer 1,2,3,4 can be Geographic barrier is preventing inteerbreeding, Biological barrier  is preventing inteerbreeding or nothing is preventing inteerbreeding

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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Complete the chart below to indicate which occurrences would provide barriers sufficient for possible speciation of the organism.

Change in ecosystem Effect on reproduction
A mountain river is dammed to produce hydroelectric energy. This separates a population of bull trout. Answer1
A remote hiking trail with limited foot traffic is home to many elk. The trail is expanded to allow for hikers to cross a stream by building a bridge. Answer2
One sample of frog lays its eggs in shallow water at a pond's edge. Another frog sample in the same area digs a hole near the pond to lay its eggs. Answer3
One sample of swallow (a bird) uses grasses and mud to build a nest, and another sample uses twigs.

Answer 4

 

Answer 1,2,3,4 can be Geographic barrier is preventing inteerbreeding, Biological barrier  is preventing inteerbreeding or nothing is preventing inteerbreeding

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