Campbell Biology:conc.(ll)-w/access
9th Edition
ISBN: 9780134784427
Author: Reece
Publisher: PEARSON
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Chapter 19, Problem 4TYK
Why were the Tiktaalik fossils an exciting discovery for scientists studying tetrapod evolution?
a. They are the earliest frog-like animal discovered to date.
b. They show that tetrapods successfully colonized land much earlier than previously thought.
c. They have a roughly equal combination of fishlike and tetrapod-like characteristics.
d. They demonstrate conclusively that limbs evolved as lobe-fins dragged themselves from pond to pond during droughts.
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Chapter 19 Solutions
Campbell Biology:conc.(ll)-w/access
Ch. 19 - Connecting the Concepts 1. In the primate...Ch. 19 - Connecting the Concepts 2. In the chordate...Ch. 19 - A lamprey, a shark, a lizard, and a rabbit share...Ch. 19 - Why were the Tiktaalik fossils an exciting...Ch. 19 - Fossils suggest that the first major trait...Ch. 19 - Which of the following correctly lists possible...Ch. 19 - Which of these is not a member of the anthropoids?...Ch. 19 - Studies of DNA support which of the following? a....Ch. 19 - The earliest members of the genus Homo a. had a...Ch. 19 - Compare the adaptations of amphibians and reptiles...
Ch. 19 - Birds and mammals are both endothermic, and both...Ch. 19 - One of the misconceptions about human evolution is...Ch. 19 - What adaptations inherited from our primate...Ch. 19 - Summarize the hypotheses that explain variation in...Ch. 19 - A good scientific hypothesis is based on existing...Ch. 19 - Explain some of the reasons why the human species...Ch. 19 - Anthropologists are interested in locating areas...Ch. 19 - SCIENTIFIC THINKING By measuring the fossil...
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