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Name ______________________________ Class ___________________ Date __________________ Skills Worksheet Directed Reading 14.3 Section: Genome Interactions Read each question, and write your answer in the space provided. 1. What is a genome? _______________________________________________________________ _______________________________________________________________ 2. What is meant by the “universal code?” _______________________________________________________________ _______________________________________________________________ In the space provided, write the letter of the description that best matches each term. _____ 3. plasmid _____ 4. transposon _____ 5. noncoding DNA a. introns are examples b. jumping gene c. extra piece of DNA found in bacteria d. plasmids are examples _____ 6. MGE Complete each statement by underlining the correct term in the brackets. 7. In cell differentiation, cells become [transposed / specialized]. 8. Regulatory genes that control development include [homeotic genes / telomeres]. In the space provided, explain how the terms in each pair differ in meaning. 9. CDK, cyclin _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Biology 5 Genes in Action Name ______________________________ Class ___________________ Date __________________ 10. apoptosis, cell differentiation _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 11. Which of the following can add new genes to a eukaryotic genome? a. transposons c. plasmids b. homeotic genes d. retroviruses 12. What is the evidence that mitochondria and chloroplasts emerged from an endosymbiotic relationship? _______________________________________ _________________________________________________________________ _________________________________________________________________ 13. Describe the function of hox genes. _________________________________ _________________________________________________________________ _________________________________________________________________ Original content Copyright © by Holt, Rinehart and Winston. Additions and changes to the original content are the responsibility of the instructor. Holt Biology 6 Genes in Action