Problem Set 6 Answers

Problem Set 6 Answers - __7__b. Nucleosome 2. Small basic...

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Genetics 380 : Spring 2011 Problem Set 6 Answers Q. 1 It was repeated from Problem set 5 last week (effect of one frameshift mutation and its suppression by a second frameshift mutation). So, you have the answer to this question already. Chapter 7 Q. 2. The volume of average E. coli cell = (3.14 x 5,000 x 5000 x 20,000 A 3 ) = 3.14 x 5 x10 11 A 3 . The volume of E. coli DNA = (3.14 x 10 x 10 x 3.4 x 4.6 x 10e6 )A 3 = 3.14 x 1.56 x 10 9 A 3 % of E. coli cell volume used by its DNA =(3.14 x 1.56 x 10 9 / 3.14 x 5 x 10 11 ) x100 = 0.31% (or roughly 1 part in 320). Q. 3. For each of the terms in the left column , choose the best matching phrase in the right column- __4__a. Telomere 1. Repetitive DNA found near the centromere in higher eukaryotes.
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Unformatted text preview: __7__b. Nucleosome 2. Small basic proteins that bind to DNA and form the core of the nucleosome. __1__c. Satellite DNA 3. A complex of proteins in the center of a chromosome to which loops of chromatin are attached. __6__d. Chromatin 4. Specialized structures at the ends of a linear chromosome. __2__e. Histones 5. Giant chromosomes in Drosophila salivary glands. __3__f. Scaffold 6. Complexes of DNA and proteins in the eukaryotic nucleus. __5__g. Polytene 7. Beadlike structure consisting of DNA wound around histone proteins. Chromosomes Q. 4. It is being repeated on problem Set # 7. Answer will be posted next week....
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