BIOLOGY
12th Edition
ISBN: 9781260169614
Author: Raven
Publisher: RENT MCG
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Chapter 19.6, Problem 2LO
Summary Introduction
To determine: The importance of homeobox genes in evolution.
Introduction: The Hox genes are homeotic genes that are present in all animals. These genes are expressed along the anteroposterior axis during the development of the embryo.
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Chapter 19 Solutions
BIOLOGY
Ch. 19.1 - Prob. 1LOCh. 19.2 - Prob. 1LOCh. 19.2 - Prob. 2LOCh. 19.2 - Distinguish differences in cell division between...Ch. 19.3 - Prob. 1LOCh. 19.3 - Prob. 2LOCh. 19.3 - Prob. 3LOCh. 19.4 - Prob. 1LOCh. 19.4 - Prob. 2LOCh. 19.5 - Prob. 1LO
Ch. 19.5 - Describe D/V axis formation in Drosophila.Ch. 19.6 - Prob. 1LOCh. 19.6 - Prob. 2LOCh. 19.6 - Prob. 3LOCh. 19.7 - Prob. 1LOCh. 19.7 - Prob. 2LOCh. 19.7 - Prob. 3LOCh. 19 - What type of cells would develop if you injected...Ch. 19 - The sheep used for the donor nucleus had a...Ch. 19 - During development, cells become a. differentiated...Ch. 19 - Prob. 2UCh. 19 - Prob. 3UCh. 19 - Prob. 4UCh. 19 - Plant meristems a. are only present during...Ch. 19 - Prob. 6UCh. 19 - The process of nuclear reprogramming a. is a...Ch. 19 - What is the common theme in cell determination by...Ch. 19 - The process of reproductive cloning a. shows that...Ch. 19 - Prob. 3ACh. 19 - Prob. 4ACh. 19 - The genes that encode the morphogen gradients in...Ch. 19 - What would be the likely result of a mutation of...Ch. 19 - MADS-box, and Hox genes are a. found only in...Ch. 19 - The fate map for C. elegans (refer to figure 19.3)...Ch. 19 - Prob. 2SCh. 19 - You have generated a set of mutant embryonic mouse...Ch. 19 - Assume you have the factors in hand necessary to...
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- Explain why the statement that a monkey is more evolved than a mouse is incorrect.arrow_forwardDescribe how changes in the ladybugs'environment may influence their survival and/or reproduction. Make sure to use the vocabulary terms adaptation, natural selection, and polymorphic.arrow_forwardJean-Baptiste Lamarck (1744-1829), a French scientist who believed in evolution, is known for Lamarckism, or inheritance through acquired characteristics. He argued that environmental influences could put pressure on animals, making them use some characteristics more and some less, and that the changes acquired by the parents would be passed to the next generations. A common example of this theory is that giraffes could actually grow longer necks by straining to get to higher and higher branches for food, and that the offspring of these longer- necked giraffes would have longer necks at birth. We will get to epigenetics later in the class, and realize that Lamarck wasn't all wrong. But he was mistaken about giraffes! Your responses will help you understand why... (France page 7) a. Is this argument at the level of a hypothesis, or is it a theory? Why? b. How would you set up an experiment to test Lamarck's beliefs? c. What would be your dependent variable? d. What would be your…arrow_forward
- Explain the concept of the pangenome to describe all distinct genes and variations in a species ?arrow_forwardWhat makes development evolution different from species evolution?arrow_forwardWhy are the similarities among organisms during early development evidence for evolution? Give an example.arrow_forward
- Are humans influencing the process of evolution? Explainarrow_forwardIf natural selection can only operate on existing variants, where does all that variation come from? If, as Darwin (1868) and Huxley concluded, variation arose from changes in development, then how could the development of an embryo change when development is so finely tuned and complex?arrow_forwardWhich of the following examples from class show that a mutation can have evolutionary benefits? Group of answer choices C) Hox mutations that lead to legs developing on fruit flies where antennae should be A and B A, B, and C B) Hox mutations leading to limbs with digits forming from lobe fins A) Stickleback fish mutationarrow_forward
- Given the distribution of Hox genes among animals, what would you predict about the number and type of Hox genes in the common ancestor of all animals?arrow_forwardHow to understand the roles of genes in evolution ?arrow_forwardMAKE A simple sketch and label characteristics Choose a human-related organism to study. As you consider strategies to enhance the social value of this organism, think of other desirable attributes that may be added to it. Imagination is a powerful tool, so let it go wild and imagine that you can transfer genes across other animals. For example: A gene from a firefly has been transferred into tobacco plants so that they may glow in the dark, as demonstrated by geneticists. Tobacco pests are less likely to attack at night because of this.arrow_forward
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