It became apparent to watson and crick after

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17) It became apparent to Watson and Crick after completion of their model that the DNA molecule could carry a vast amount of hereditary information in which of the following? A) sequence of bases B) phosphate-sugar backbones C) complementary pairing of bases D) side groups of nitrogenous bases E) different five-carbon sugars Answer: A Topic: Concept 16.1 Skill: Knowledge/Comprehension 18) In an analysis of the nucleotide composition of DNA, which of the following will be found? 19) Mendel and Morgan did not know about the structure of DNA; however, which of the following of their contributions was (were) necessary to Watson and Crick? 5
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20) Replication in prokaryotes differs from replication in eukaryotes for which of these reasons? 21) What is meant by the description "antiparallel" regarding the strands that make up DNA? A) The twisting nature of DNA creates nonparallel strands. B) The 5' to 3' direction of one strand runs counter to the 5' to 3' direction of the other strand. C) Base pairings create unequal spacing between the two DNA strands. D) One strand is positively charged and the other is negatively charged. E) One strand contains only purines and the other contains only pyrimidines. Answer: B Topic: Concept 16.2 Skill: Knowledge/Comprehension 22) Suppose you are provided with an actively dividing culture of E. coli bacteria to which radioactive thymine has been added. What would happen if a cell replicates once in the presence of this radioactive base? Use Figure 16.1 to answer the following questions. 6
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Figure 16.1
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