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Biology Chapter Vocabulary and Question Set 17-B (Sections 17.3-17.4) Do not write on this sheet. Write questions and number vocabulary Vocabulary: 1. Molecular clock 8. Ernst Haeckal 2. Mitochondrial DNA 9. Herbert Copeland 3. Ribosomal RNA 10. Robert Whittaker 4. Bacteria 11. Carl Woese 5. Archaea 12. Monera 6. Eukarya 7. Domain Questions: 1. How do molecular clocks keep time? 2. Why is classification always a work in progress? 3. Why are mitochondrial DNA ;and ribosomal RNA used as clock? 4. According to the chart on page 531 what species is most closely related to man?