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chapter24 - Chapter 24 Genes and Chromosomes Multiple...

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Chapter 24 Genes and Chromosomes Chapter 24 Genes and Chromosomes Multiple Choice Questions 1. Chromosomal elements Pages: 947-948 Difficulty: 2 Ans: B The most precise modern definition of a gene is a segment of genetic material that: A) codes for one polypeptide. B) codes for one polypeptide or RNA product. C) determines one phenotype. D) determines one trait. E) that codes for one protein. 2. Chromosomal elements Page: 949 Difficulty: 1 The DNA in a bacterial (prokaryotic) chromosome is best described as: 3. Chromosomal elements Page: 949 Difficulty: 1 Bacterial plasmids: 4. Chromosomal elements Pages: 948-951 Difficulty: 1 Ans: B Which of these statements about nucleic acids is false ? A) Mitochondria and chloroplasts contain DNA. B) Plasmids are genes that encode plasma proteins in mammals. C) The chromosome of E. coli is a closed-circular, double-helical DNA. D) The DNA of viruses is usually much longer than the viral particle itself. E) The genome of many plant viruses is RNA. 24
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Chapter 24 Genes and Chromosomes 5. Chromosomal elements Pages: 948-951 Difficulty: 2 Functional DNA is not found in: 6. Chromosomal elements Pages: 948-951 Difficulty: 2 Ans: B The DNA in a eukaryotic chromosome is best described as: A) a single circular double-helical molecule. B) a single linear double-helical molecule. C) a single linear single-stranded molecule. D) multiple linear double-helical molecules. E) multiple linear single-stranded molecules. 7. Chromosomal elements Page: 952 Difficulty: 1 Introns: 8. Chromosomal elements Page: 952 Difficulty: 2 Approximately what fraction of the human genome is tranaposable elements?
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