When Arizona's Grand Canyon formed, squirrels and other small mammals that had once been part of a single population could no longer contact and reproduce with each other across this new geographic barrier. They could no longer interbreed. On the other hand, birds and other species that could easily cross this barrier continued to interbreed. Predict the long-term effect the formation of the Grand Canyon may have had on squirrel and bird species over time. *

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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When Arizona's Grand Canyon formed, squirrels and other small mammals
that had once been part of a single population could no longer contact
and reproduce with each other across this new geographic barrier. They
could no longer interbreed. On the other hand, birds and other species
that could easily cross this barrier continued to interbreed. Predict the
long-term effect the formation of the Grand Canyon may have had on
squirrel and bird species over time.
Transcribed Image Text:When Arizona's Grand Canyon formed, squirrels and other small mammals that had once been part of a single population could no longer contact and reproduce with each other across this new geographic barrier. They could no longer interbreed. On the other hand, birds and other species that could easily cross this barrier continued to interbreed. Predict the long-term effect the formation of the Grand Canyon may have had on squirrel and bird species over time.
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