CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
10th Edition
ISBN: 9780136538820
Author: Taylor
Publisher: INTER PEAR
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Chapter 18, Problem 21TYK
SCIENTIFIC THINKING In one of the experiments described in Module 18.13, researchers tested the hypothesis that the highly successful arthropod body plan resulted from new genes that originated in the arthropod lineage. Draw a diagram showing the evolutionary relationship between arthropods and velvet worms and use it to explain why velvet worms were a good choice to test this hypothesis. What results would have supported the hypothesis?
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Consider Lamarck’s idea in a hypothetical situation. For example, you decided that when you have children, you want them to be big ang strong. You decided to go to the gym every day for a year. You did all your exercise routines diligently and you were able to develop really bulky and toned muscles because you believed that your kids would inherit your big impressive muscles. Do you think this would work? Justify your answer using the concepts you have learned from Genetics, as well as Darwin’s concept of evolution.
Scientists compare the structures of a chicken embryo and a human embryo at the same stage of development. They find that both vertebrates have similar shapes and structures, including the presence of gill slits and tails. How is this comparison of the embryos used as supporting evidence of evolution?
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B. The similarities suggest that vertebrates passthrough each of the adult stages of their evoluntionary history as they develop.
C. The similarities suggest that vertebrates can undergo genetic changes during development that lead to the evolution of new species
D. The similarities suggest that chickens and humans descend from ancestors with genes that code for the development of tails and gill slits
Morphological analogs are structures having similar functions but different origins. For example, the wing of an airplane and a wing of a bird are analogous but certainly have different origins. Name and explain the comparisons of THREE ideas that humans have borrowed from plants and animals to use in building structures and making materials.
Chapter 18 Solutions
CAMPBEL BIOLOGY:CONCEPTS & CONNECTIONS
Ch. 18 - Prob. 1CCCh. 18 - Identify the pattern of embryonic development...Ch. 18 - Bilateral symmetry in animals is best correlated...Ch. 18 - Jon found an organism in a pond, and he thinks its...Ch. 18 - Which of the following groupings includes the...Ch. 18 - Which of the following animal groups does not have...Ch. 18 - Prob. 7TYKCh. 18 - Prob. 8TYKCh. 18 - Prob. 9TYKCh. 18 - Prob. 10TYK
Ch. 18 - The simplest animal group a. annelids b. nematodes...Ch. 18 - Prob. 12TYKCh. 18 - Largest phylum of all a. annelids b. nematodes c....Ch. 18 - Closest relatives of chordates a. annelids b....Ch. 18 - Prob. 15TYKCh. 18 - Prob. 16TYKCh. 18 - Prob. 17TYKCh. 18 - Name two phyla of animals that are radially...Ch. 18 - One of the key characteristics of arthropods is...Ch. 18 - A marine biologist has dredged up an unknown...Ch. 18 - SCIENTIFIC THINKING In one of the experiments...
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