I. Why are there only three species of finches on the mainland of South America and up to 16 different species of finches on the Islands? II. Describe the mechanism by which the original population of finches arrived on the islands. III. An original population of finches on Daphne Island is polymorphic when it comes to beak sizes. (this population feeds on seeds of varying sizes from different species of plants). At first the beak size variations and their main food source were as follows: Small beak/small seeds 25% Medium beak/medium seeds 50% Large beak / large 25%

I. Why are there only three species of finches on the mainland of South America and up to 16 different species of finches on the Islands? II. Describe the mechanism by which the original population of finches arrived on the islands. III. An original population of finches on Daphne Island is polymorphic when it comes to beak sizes. (this population feeds on seeds of varying sizes from different species of plants). At first the beak size variations and their main food source were as follows: Small beak/small seeds 25% Medium beak/medium seeds 50% Large beak / large 25%

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter22: Speciation

Section: Chapter Questions

Problem 15TYK

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