Biology: The Dynamic Science (MindTap Course List)
4th Edition
ISBN: 9781305389892
Author: Peter J. Russell, Paul E. Hertz, Beverly McMillan
Publisher: Cengage Learning
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Chapter 47, Problem 3ITD
Summary Introduction
To review:
Whether the data support the hypothesis put forward by George Perry and his team about the duplication of AMY-1 genes and its selective advantage in cultures having starch as their base diet.
Introduction:
George Perry and his team conducted experiments on the AMY-1 gene that could confer a selective advantage in cultures in which starch is a large part of the diet. They hypothesized that duplication of the gene would have a selective advantage. They collected data based on seven different cultural groups with different traditional diets.
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In humans, the AMY1 gene produces the enzyme amylase in cells of the salivary glands. Amylase breaks down starch (a polysaccharide) into the sugar maltose (a disaccharide). People from cultures with diets high in starch produce more amylase than people from cultures with diets low in starch because of a mutation in the AMY1 gene. Explain in two to three sentences why the frequency of this AMY1 mutation would have increased in frequency in populations with a high starch diet.
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How are we going to feed and clothe the rapidly rising human population worldwide? How are we going to stop famine and crop loss? These are some very important questions biologists are working on as the world changes and problems arise. One possible solution could be the increased use of technology to improve food crops. These crops often have foreign DNA inserted into them that produces a protein product, such as herbicide resistance, to protect the plant or increase yield. They are termed GMO's (Genetically Modified Organisms) and they are hotly debated in both science and the public sphere. In this discussion you will demonstrate an understanding of GMOs and reflect on the pros and cons of their development and use
This week's discussion involves 1 part. In this discussion, pick a side, PRO or CON, and argue your case that GMO's are either going to save the world or destroy it. You may very well find that this issue is not as black and white as it is made out to be! Please remember…
Chapter 47 Solutions
Biology: The Dynamic Science (MindTap Course List)
Ch. 47.1 - Prob. 1SBCh. 47.1 - Prob. 2SBCh. 47.1 - What is the difference between deposit feeders and...Ch. 47.2 - Prob. 1SBCh. 47.2 - Prob. 2SBCh. 47.3 - Prob. 1SBCh. 47.3 - Prob. 2SBCh. 47.3 - Prob. 3SBCh. 47.3 - Prob. 4SBCh. 47.4 - Prob. 1SB
Ch. 47.4 - Prob. 2SBCh. 47.5 - How are the different types of teeth used in...Ch. 47.5 - What roles do symbiotic microorganisms play in...Ch. 47 - Prob. 1TYKCh. 47 - Prob. 2TYKCh. 47 - The order of successive steps in digestion is: a....Ch. 47 - Prob. 4TYKCh. 47 - Prob. 5TYKCh. 47 - Prob. 6TYKCh. 47 - If the fat in whole milk is ingested: a. the...Ch. 47 - The role of the liver in digestion is to: a....Ch. 47 - Prob. 9TYKCh. 47 - Prob. 10TYKCh. 47 - Prob. 11TYKCh. 47 - Prob. 12TYKCh. 47 - Prob. 13TYKCh. 47 - Prob. 14TYKCh. 47 - Apply Evolutionary Thinking What is the advantage...Ch. 47 - The human AMY-1 gene encodes salivary amylase, an...Ch. 47 - Prob. 2ITDCh. 47 - Prob. 3ITD
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- A. Hank is going to talk about Gene Guns and Agrobacterium which I will discuss in a video lecture next week. B. How long does it take to develop and bring a GMO crop to market? C. What are some of the drawbacks to GE organisms? D.One of the interviewees is a woman in bright pink t-shirt and she is trying to describe drawbacks to GMOs. While not a cogent argument, I think there is an important point that she is trying to make. Do you know what she is trying to say?arrow_forwardDomestic dogs are closely related to wolves. Wolves have one copy of the gene that encodes the enzyme amylase. Amylase is required to digest starch. Dogs have between 4 and 30 copies of this gene. Explain how the new copies arose in the genome of the domestic dog. Compare this to the evolution of lactase persistence in humans. Explain how the diet and environment of a dog compared to a wolf would result in fixation of the duplicated gene. What possible explanation is there for the variation of copy number among dog breeds?arrow_forwardGenetic engineering is a process causes the production of GMOs ( Genetically Modified Organisms) due to the ideas of biologists. The presence of the products contributes the division of the society in relation to GMOs effects. TASK: You serve as a genetic engineer, if you are given a chance what GMO would you like to produce? What to do: Give a name of your GMO Illustrate and/or describe your GMO List all the possible pros and consarrow_forward
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