Genetic Analysis: An Integrated Approach (2nd Edition)
2nd Edition
ISBN: 9780321948908
Author: Mark F. Sanders, John L. Bowman
Publisher: PEARSON
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Chapter 20, Problem 9P
Summary Introduction
To analyze:
The activity of RNA polymerase II is inhibited by Actinomycin D. When actinomycin D is present, early development in many vertebrate species, for example frogs, can begin after the formation of a blastula (hollow ball of cells that forms after early cleavage divisions), but development stops before gastrulation. Question asked to discuss the activity of maternal gene in contrast to activity of zygotic gene in early frog development.
Introduction:
Drosophila is the model organism of study of development. It is a well studied genome sequence. Multiple genes are involved in the development of drosophila. The gene that directs the development and fate of an organism are known as developmental genes. Bicoid and Nanos are maternal effect genes; the egg receives these from the mother. Bicoid and Nanos play an important role in creating the anterior to posterior axis. The genes are activated in the fertilized egg (Zygote). In contrast to maternal effect genes, these genes are transcribed by zygotic DNA.
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Chapter 20 Solutions
Genetic Analysis: An Integrated Approach (2nd Edition)
Ch. 20 - 18.1 Explain why many developmental genes encode...Ch. 20 - Bird beaks develop from an embryonic group of...Ch. 20 - 18.3 How is positional information provided along...Ch. 20 - Early development in Drosophila is atypical in...Ch. 20 - 18.5 Consider the evenskipped regulatory sequences...Ch. 20 - What is the difference between a parasegment and...Ch. 20 - Why do loss-of-function mutations in Hox genes...Ch. 20 - 18.8 Compare and contrast the specification of...Ch. 20 - Prob. 9PCh. 20 - Ablation of the anchor cell in wild type C....
Ch. 20 - 18.11 In gain-of-function and. elegans mutants,...Ch. 20 - Prob. 12PCh. 20 - Prob. 13PCh. 20 - 18.14 Given that maternal Bicoid activates the...Ch. 20 - What phenotypes do you expect in flies homozygous...Ch. 20 - The pair rule gene fushitarazu is expressed in...Ch. 20 - 18.17 In contrast to Drosophila, some insects...Ch. 20 - Prob. 18PCh. 20 - 18.19 You are traveling in the Netherlands and...Ch. 20 - 19.20 A powerful approach to identifying genes of...Ch. 20 - Prob. 21PCh. 20 - The Hoxd 913 genes are thought to specify digit...Ch. 20 - Three-spined stickleback fish live in lakes formed...Ch. 20 - In C. elegans there are two sexes: hermaphrodite...Ch. 20 - The flowering jungle plant Lacandoniaschismatica,...Ch. 20 - 18.24 Homeotic genes are thought to regulate each...Ch. 20 - Prob. 27PCh. 20 - Basidiomycota is a monophyletic group of fungi...Ch. 20 - In Drosophila, recessive mutations in the...
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