1. Scientists have discovered how to put together a bacteriophage with the protein coat of phage T2 and the DNA of phage T4. If this composite phage were allowed to infect a bacterium, the phages produced in the host cell would have ____ （Explain your answer） a. the protein of T2 and the DNA of T4 b. the protein of T4 and the DNA of T2 c. a mixture of the DNA and proteins of both phages d. the protein and DNA of T2 e. the protein and DNA of T4 2. A geneticist found that a particular mutation had no effect on the polypeptide coded by a gene. This mutation probably involved a. deletion of one nucleotide b. alteration of the start codon c. insertion of one nucleotide d. deletion of the entire gene e. substitution of one nucletide 4. The nucleotide sequence of a DNA codon is GTA. A messenger RNA molecule with a complementary codon is transcribed from the DNA. In the process of protein synthesis, a transfer RNA pairs with the mRNA codon. What is the nucleotide sequence of the tRNA anticodon? a. CAT b. CUT c. GUA d. CAU e. GT --

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