Campbell Biology (11th Edition)

Published by Pearson
ISBN 10: 0-13409-341-0
ISBN 13: 978-0-13409-341-3

Chapter 56 - Test Your Understanding - Level 3 - Synthesis/Evaluation - Page 1284: 10


The factor of the introduced species had not been a factor on generations of selection prior to its arrival.

Work Step by Step

Because of this, prior generations of other species in the area will have no adaptations associated with this introduced species. Any predation will be unspecialized, if present at all, and because pathogens and parasites tend to be so heavily specialized they are even less likely to already exist in the new environment. Selection pressure depends on existing factors over many generations, something that was not possible before the introduction.
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