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| When one strand of bacteria had been changed permanently into another. |
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| Two strands of DNA wound around each other |
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| Eukaryotic chromosomes tightly packed together. |
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| DNA that is tightly coiled around proteins |
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| The principal enzyme involved in DNA replication |
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| Coded DNA instructions that control the production of proteins within the cell |
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| molecules that carry copies of instructions |
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| Transfers amino acid to the ribosome as it is specified by coded messages |
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| copying part of the nucleotide sequence of DNA into a complementary sequence in RNA |
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| 3 consecutive nucelotides that specify a single amino acid that is to be added to the polpeptide |
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| The decoding of an mRNA message into a polypeptide chain |
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| tRNA molecules that have three unpaired bases. |
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| genetic mistakes or changes in genetic material |
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