Genetics: From Genes To Genomes (6th International Edition)
6th Edition
ISBN: 9781260041217
Author: Leland Hartwell Dr., ? Michael L. Goldberg Professor Dr., ? Janice Fischer, ? Leroy Hood Dr.
Publisher: Mcgraw-Hill
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Textbook Question
Chapter 19, Problem 34P
The Drosophila even-skipped (eve) gene has four different enhancers that control its transcription in a pattern of seven stripes. (One of them—the stripe 2 enhancer—is shown in Fig. 19.23c.)
a. | Why is the stripe 2 enhancer active only in cells corresponding to stripe 2? |
b. | The other three enhancers each work in the cells corresponding to two different (nonadjacent) stripes. How is this possible? |
c. | Secondary pair-rule genes like ftz have only one enhancer that is active in all seven stripes. How is this possible? Describe an experiment that would have led scientists to this conclusion. |
d. | Would you expect the segment polarity gene engrailed to have two enhancers or fourteen enhancers, one active in each stripe? |
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FIGURE 4.6. Comparison of Northern blots with DNA microarray
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transcription (i.e., the merged microarray spot would have appeared yellow).
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FIGURE 4.7 Transcriptional response of three genes
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1)A. how do you read a sequence of DNA (template or non-template strand) to convert it
an mRNA sequence and to a protein?
B.How does chromatin remodeling regulate gene transcription?
C. What are the major differences between gene expression in bacteria and eukaryotes
D. How are non-coding regions involved in gene transcription?
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Please 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?
Chapter 19 Solutions
Genetics: From Genes To Genomes (6th International Edition)
Ch. 19 - Match each of the terms in the left column to the...Ch. 19 - a. If you were interested in the role of a...Ch. 19 - Early C. elegans embryos display mosaic...Ch. 19 - Hypomorphic mutations in the wingless gene of...Ch. 19 - Prob. 5PCh. 19 - In 1932, H. J. Muller suggested a genetic test to...Ch. 19 - a. Explain how you could use worms transformed...Ch. 19 - Suppose you want to determine whether a particular...Ch. 19 - Sevenless is an unusual receptor protein in that...Ch. 19 - Suppose that you generated flies containing a...
Ch. 19 - Drosophila researchers have collected many strains...Ch. 19 - As an alternative to random mutagenesis,...Ch. 19 - A C. elegans nematode gene called par-1 helps to...Ch. 19 - The molecular identity of the fruit fly rugose...Ch. 19 - To determine the focus of action of boss,...Ch. 19 - Suppose a particular gene is required for early...Ch. 19 - Researchers have exploited Minute mutations in...Ch. 19 - Some ts alleles are temperature sensitive during...Ch. 19 - The following figure shows the temperature-shift...Ch. 19 - A temperature-sensitive allele of the gene...Ch. 19 - Hypomorphic alleles of a pleiotropic gene...Ch. 19 - In addition to the maternal effect genes that...Ch. 19 - The yan gene encodes a transcription factor that...Ch. 19 - Recall from Chapter 17 that in Drosophila, sex...Ch. 19 - a. Explain the difference between maternal...Ch. 19 - In the 1920s, Arthur Boycott, working with the...Ch. 19 - The Drosophila mutant screen shown on the...Ch. 19 - Some genes are required both zygotically and...Ch. 19 - How would a human with a mutation in a maternal...Ch. 19 - One important demonstration that Bicoid is an...Ch. 19 - The hunchback gene contains a 5 transcriptional...Ch. 19 - In flies developing from eggs laid by a...Ch. 19 - Wild-type embryos and mutant embryos lacking the...Ch. 19 - The Drosophila even-skipped eve gene has four...Ch. 19 - In Drosophila with loss-of-function mutations...Ch. 19 - It is crucial to the development of Drosophila...Ch. 19 - In the plant Arabidopsis thaliana, every flower is...
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