Chapter 25: Q25.4-2CC (page 542)
What factors promote adaptive radiations?
Short Answer
The factors that promote adaptive radiation have new evolutionary traits, mass extinction, and new ecological opportunities.
Chapter 25: Q25.4-2CC (page 542)
What factors promote adaptive radiations?
The factors that promote adaptive radiation have new evolutionary traits, mass extinction, and new ecological opportunities.
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Get started for freeThe first appearance of free oxygen in the atmosphere likely triggered a massive wave of extinctions among the prokaryotes of the time. Why?
What evidence supports the hypothesis that mitochondria preceded plastids in the evolution of eukaryotic cells?
Suppose that an invertebrate species was lost in a mass extinction caused by a sudden catastrophic event. Would the last appearance of this species in the fossil record necessarily be close to when the extinction actually occurred? Would the answer to this question differ depending on whether the species was common (abundant and widespread) or rare? Explain.
Fossilized stromatolites
(A) formed around deep-sea vents.
(B) resemble structures formed by bacterial communities that are found today in some shallow marine bays.
(C) provide evidence that plants moved onto land in the company of fungi around 500 million years ago.
(D) contain the first undisputed fossils of eukaryotes.
Describe how gene flow, genetic drift, and natural selection all can influence macroevolution.
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