EBK BIOLOGY
11th Edition
ISBN: 8220102797352
Author: Raven
Publisher: YUZU
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Textbook Question
Chapter 25, Problem 5U
The Brachyury and Thx5 in vertebrates and the Ap3 gene in flowering plants
a. are examples of Hox genes.
b are examples of co-opting a gene for a new function.
c. are homologues for determining the body plan of eukaryotes.
d. help regulate the formation of appendages
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Insect wings are coded for by the same gene that creates...
A. internal air branches (trachea)
B. Their cuticle
C. their antennae
D. parts of crustacean appendages, like legs
An organism has a relatively large number of Hox genes in its genome. Which of the following is true
of this organism?
Select one:
А.
Its Hox genes cooperate to bring about sexual maturity at the proper stage of development.
В.
Most of its Hox genes owe their existence to gene fusion events.
С.
The organism must have multiple paired appendages along the length of its body.
D.
These genes are fundamental, and are expressed in all cells of the organism.
E.
The organism has the genetic potential to have a relatively complex anatomy.
Hox genes are activated in specific regions of the body (e.g. back of the head) and activate other genes to build specific structures in those regions. This was largely discovered by looking at the effects of mutants of the various hox genes. What other technique would provide information on the action of hox genes?
Group of answer choices
A. copy hox genes and place them in bacteria
B. copy hox genes and place them in plants
C. completely remove all hox genes from the genome
D. change the control of hox genes so that they are expressed in different body regions
E. reverse the order of the hox genes on the chromosome
Chapter 25 Solutions
EBK BIOLOGY
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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