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Ch. 25 - Phylogenies and the History of Life

Chapter 24, Problem 3

Which of the following best characterizes an adaptive radiation? a. Descendant species occupy a large geographic area. b. A single lineage diversifies rapidly, and descendant species occupy many habitats and ecological roles. c. Natural selection is particularly intense, because disruptive selection occurs. d. Species recover after a mass extinction.

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Hello everyone here We have a question asking which of the following does not display adaptive radiation? Australian marsupials. The Galapagos finches see Hawaiian flowering plants or the rock dwelling snail species in limestone rocks increase. So what is adaptive radiation? Adaptive radiation is a rapid increase in the number of species with a common ancestor. And this is usually characterized by great ecological and morphological diversity. So we know that the Galapagos finches experience this, Which Darwin watched. Australian marsupials also experienced this and Hawaiian flowering plants to experience this. So the only one that does not display adaptive radiation is deep rock dwelling snail species in limestone rocks in crete. Thank you for watching. Bye.
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