Biology
12th Edition
ISBN: 9781260494570
Author: Raven, Peter
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 43, Problem 10U
Summary Introduction
The eyes of the vertebrates and the invertebrates are analogous organs that have the same function but have different structures. Eyes are the sensory organ required for visualization purposes. The genes for eye development is the same invertebrates seemed to function normally in the insect genome.
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Suppose that Drosophila has 3 thoracic hox genes (PS3 - PS5) and 10 abdominal hox genes (PS6 - PS15) corresponding to the three thoracic and 10 abdominal body segments. What would happen to the development of the fly if you inactivated PS6 and PS7?
Explain in detail
) Explain how and why dorsal/ventral polarity will be affected in fly
Question 3 (1.
embryos carrying the following mutations; also in each case darken in the area of the cells
in the cross-sectional view of the fly embryo which are expected to express the paulie gene.
D = dorsal; V = ventral.
a) a mutation which results in the deletion of the cytoplasmic domain of the Cookie protein.
b) A mutation which results in a constitutively active Bombe protein, i.e. the Bombe protein
is always in an activated state.
c) A mutation which causes the Pickle protein to be retained in the cytoplasm of the
embryo.
a. Explain how you could use worms transformedwith myo-2::GFP to find mutations that disrupt thestructure of the pharynx. How would the presenceof the transgene facilitate the mutant screen?b. Nematodes homozygous for loss-of-function mutations in a gene called pha-4 have no detectablepharyngeal structures. How could you use myo2::GFP to determine if pha-4 is a master regulatory gene that directs development of the pharynxin a manner similar to the way Pax-6/eyeless controls eye development?
Chapter 43 Solutions
Biology
Ch. 43.1 - Prob. 1LOCh. 43.1 - Prob. 2LOCh. 43.1 - Describe how gated ion channels work.Ch. 43.2 - Prob. 1LOCh. 43.2 - Describe the function of these receptors.Ch. 43.2 - Describe the relationship between thermoreceptors...Ch. 43.3 - Prob. 1LOCh. 43.3 - Prob. 2LOCh. 43.4 - Prob. 1LOCh. 43.4 - Prob. 2LO
Ch. 43.4 - Prob. 3LOCh. 43.5 - Prob. 1LOCh. 43.5 - Prob. 2LOCh. 43.6 - Prob. 1LOCh. 43.6 - Prob. 2LOCh. 43.6 - Prob. 3LOCh. 43.7 - Prob. 1LOCh. 43 - Prob. 1DACh. 43 - Prob. 1IQCh. 43 - Prob. 2IQCh. 43 - Prob. 3IQCh. 43 - Which of these is NOT a method by which sensory...Ch. 43 - Which of the following correctly lists the steps...Ch. 43 - All sensory receptors are able to initiate nerve...Ch. 43 - In the fairy tale, Sleeping Beauty fell asleep...Ch. 43 - The ear detects sound by the movement of a. the...Ch. 43 - Hair cells in the vestibular apparatus of...Ch. 43 - ________ is the photopigment contained within both...Ch. 43 - Which of the following is NOT a method used by...Ch. 43 - Prob. 9UCh. 43 - Prob. 10UCh. 43 - What do the sensory systems of annelids, mollusks,...Ch. 43 - Animals can more easily tell the direction of a...Ch. 43 - Some birds have broader color perception than...Ch. 43 - The ability of some insects, birds, and lizards to...Ch. 43 - Prob. 1SCh. 43 - The function of the vertebrate eye is unusual...Ch. 43 - How would the otolith organs of an astronaut...Ch. 43 - Prob. 4S
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