BIOLOGY W/CONNECT >IP<
11th Edition
ISBN: 9781259910487
Author: Raven
Publisher: MCG CUSTOM
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Textbook Question
Chapter 25, Problem 7U
Which of the following statements about TbxS is true?
a. TbxS, Tbx4. and AmphiTbx4/5 have very similar coding regions.
b. TbxS is involved in tail development in vertebrates.
c. 73x5, Tbx4. and AmphiTbx4/5 have very similar regulatory regions.
d. TbxS initiates hindlimb development.
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Students have asked these similar questions
Which statement about Hox genes is false?
a.
They are expressed in similar patterns in the embryos of both mice and flies.
b.
They include a conserved region of base pairs called the homeobox.
c.
They are arranged in similar clusters of genes in both mice and flies.
d.
They are part of the so-called genetic toolkit.
e.
Because of their important functional roles, they evolved rapidly in both mammals and flies.
given a situation in which you manipulated a zebrafish embryo by injecting high levels of retinoic acid so that no anterior genes will be expressed. Surprisingly, after embryonic development, you are still able to observed the presence of anterior structures. What could explain this observation? What changes in your experiment would you make to achieve your objective?
If a mutation in a homeotic gene produced the following phenotypes, would you expect it to be a loss-of-function or a gain-offunction mutation? Explain your answer.
A. An abdominal segment has antennae attached to it.
B. The most anterior abdominal segment resembles the most posterior thoracic segment.
C. The most anterior thoracic segment resembles the most posterior abdominal segment.
Chapter 25 Solutions
BIOLOGY W/CONNECT >IP<
Ch. 25 - Heterochrony is a. the alteration of the spatial...Ch. 25 - Vast differences in the phenotypes of organisms as...Ch. 25 - Homoplastic structures a can Involve convergence...Ch. 25 - Hox genes are a. found in both plants and animals....Ch. 25 - The Brachyury and Thx5 in vertebrates and the Ap3...Ch. 25 - Which of the following statements about Pax6 is...Ch. 25 - Which of the following statements about TbxS is...Ch. 25 - Prob. 8UCh. 25 - Transcription factors are a. genes. b. sequences...Ch. 25 - Independently derived mutations of the CTC gene in...
Ch. 25 - Prob. 1ACh. 25 - Prob. 2ACh. 25 - The Eda allele that causes reduced armor...Ch. 25 - Prob. 4ACh. 25 - The paired-like homeodomain transcription factor 1...Ch. 25 - From the chapter on evolution of development it...Ch. 25 - Phenotypic diversity among major groups of...Ch. 25 - Critique the argument that eyes have multiple...Ch. 25 - Prob. 5SCh. 25 - Having read all of this chapter return to the clam...
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