Biological Science (7th Edition)
7th Edition
ISBN: 9780134678320
Author: Scott Freeman, Kim Quillin, Lizabeth Allison, Michael Black, Greg Podgorski, Emily Taylor, Jeff Carmichael
Publisher: PEARSON
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Chapter 19, Problem 15PIAT
PROCESS OF SCIENCE Why can’t the results shown above be used as proof that the two different forms of the enhancer are important in determining dark versus blond hair? Propose a study that would test this idea more directly (more than one approach is possible).
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Chapter 19 Solutions
Biological Science (7th Edition)
Ch. 19 - What is chromatin? a. the histone-containing...Ch. 19 - Prob. 4TYKCh. 19 - Compare and contrast the items in each pair: (a)...Ch. 19 - Prob. 6TYUCh. 19 - Prob. 8TYUCh. 19 - Prob. 9TYPSSCh. 19 - 10. QUANTITATIVE Imagine repeating the experiment...Ch. 19 - Prob. 12PIATCh. 19 - Prob. 13PIATCh. 19 - Prob. 14PIAT
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- What is the primary advantage to using a chimeric mouse in animal trials of a new drug and what are two ways that this approach might lead to inaccurate data?arrow_forwardSuppose that you could undergo genetic testing at age 18 for susceptibility to a genetic disease that would not appear until middle age and has no available treatment. a. What would be some of the possible reasons for having such a genetic test and some of the possible reasons for not having the test? b. Would you personally want to be tested? Explain your reasoning.arrow_forwardDoes genetic analysis by ASO testing allow for detection of epigenetic changes that may contribute to a genetic disorder? Explain your answer.arrow_forward
- A paper hypothesizes that white flowers are unable to produce anthocyanins (purple pigments) because they lack a functional “A” protein. However, it is also possible that an unknown gene is responsible for the lack of anthocyanins. Now that they have isolated DNA sequences of the “A” allele, design an experiment to use these DNA sequences to distinguish between these two hypotheses.arrow_forwardGene expression can be controlled with the help of RNA.Explain the method with an example.arrow_forwardIn the introduction to this chapter, we discussed the role of famine during early prenatal development and how, through epigenetic effects, it influenced the health of individuals as adults. One effect that has been observed in people who were conceived during the Dutch Hunger Winter is that they suffer more cognitive decline later in life. If these individuals were autopsied after death, what differences might you expect to see in the chromatin of their brain cells? What do the mouse studies of cognition and epigenetic effects suggest?arrow_forward
- Would you simply answer the question for me, i saw many answers for it but still not sure. The flower color of genetically identical hemp plants (clones) is purple when the flowers develop under cold environment (30 °C). Describe in detail a molecular mechanism that could explain how these two groups of genetically identical plants differ in their gene expressions to produce different flower colors?arrow_forwardPlease answer A mutation within an enhancer sequence regulating the expression of the ABC1 gene was discovered. Specifically, the mutation was associated with decreased expression of ABC1 in skeletal muscle. In a heterozygous individual carrying a mutant enhancer and a wild type enhancer, which allele(s) would be affected by the mutant enhancer and why?arrow_forwardDetermine the experimental design that makes the difference between the given two modes of action at a specific gene possible.arrow_forward
- Mr. Jones is a pig farmer. For many years, he has fed his pigs the food left over from the local university cafeteria, which is known to be low in protein, deficient in vitamins, and downright untasty. However, the food is free, and his pigs don’t complain. One day a salesman from a feed company visits Mr. Jones. The salesman claims that his company sells a new, high-protein, vitamin-enriched feed that enhances weight gain in pigs. Although the feed is expensive, the salesman claims that the increased weight gain of the pigs will more than pay for the cost of the feed, increasing Mr. Jones’s profit. Mr. Jones responds that he took a genetics class at the university and that he has conducted some genetic experiments on his pigs; specifically, he has calculated the narrow-sense heritability of weight gain for his pigs and found it to be 0.98. Mr. Jones says that this heritability value indicates that 98% of the variance in weight gain among his pigs is determined by genetic differences,…arrow_forwardPeople with severe depression, mild depression, or no depression are included in GWAS research. Why not just look at those who have depression if the researchers are interested in genetic variations related with depression?arrow_forwardBased on the information from studies of the long-term effects of diet on metabolism in mice, what might the epigenetic effects be on the children and grandchildren of people who were exposed to famine as children? Include in your answer the types of epigenetic changes in chromatin that you might expect to see and the phenotypic effects on lipid and cholesterol metabolismarrow_forward
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