8. A geneticist finds that a particular mutation has no effect on the polypeptide encoded by the gene. This mutation probably involves a. deletion of one nucleotide b. alteration of the start codon c. insertion of one nucleotide d. substitution of one nucleotide
9. Scientists have discovered how to put together a bacteriophage with the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B b. the protein of B and the DNA of A c. the protein and DNA of A d. the protein and DNA of B
10. How do some viruses reproduce without ever having DNA?
11. HIV requires an enzyme called reverse transcriptase to convert its RNA genome to a DNA version. Why is this enzyme a particularly good target for anti-AIDS drugs? (Hint: Would you expect such a drug to harm the human host?)

Question

8. A geneticist finds that a particular mutation has no effect on the polypeptide encoded by the gene. This mutation probably involves a. deletion of one nucleotide b. alteration of the start codon c. insertion of one nucleotide d. substitution of one nucleotide 
9. Scientists have discovered how to put together a bacteriophage with the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B b. the protein of B and the DNA of A c. the protein and DNA of A d. the protein and DNA of B 
10. How do some viruses reproduce without ever having DNA? 
11. HIV requires an enzyme called reverse transcriptase to convert its RNA genome to a DNA version. Why is this enzyme a particularly good target for anti-AIDS drugs? (Hint: Would you expect such a drug to harm the human host?)

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Question Text	8. A geneticist finds that a particular mutation has no effect on the polypeptide encoded by the gene. This mutation probably involves a. deletion of one nucleotide b. alteration of the start codon c. insertion of one nucleotide d. substitution of one nucleotide 9. Scientists have discovered how to put together a bacteriophage with the protein coat of phage A and the DNA of phage B. If this composite phage were allowed to infect a bacterium, the phages produced in the cell would have a. the protein of A and the DNA of B b. the protein of B and the DNA of A c. the protein and DNA of A d. the protein and DNA of B 10. How do some viruses reproduce without ever having DNA? 11. HIV requires an enzyme called reverse transcriptase to convert its RNA genome to a DNA version. Why is this enzyme a particularly good target for anti-AIDS drugs? (Hint: Would you expect such a drug to harm the human host?)
Topic	All topics
Subject	Biology
Class	Class 12

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