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Exons

expressed sequence of DNA; codes for a protein

Transformation

process in which one strain of bacteria is changed by a gene or genes from another strain of bacteria

Introns

sequence of DNA that is not involved in coding for a protein

Anticodon

group of 3 bases on a tRNA molecule that are complementary to an mRNA codon

DNA Polymerase

enzyme involved in DNA replication that joins individual nucleotides to produce a DNA molecule

Replication

copying process by which a cell duplicates its DNA

Messenger RNA

RNA molecule that carries copies of instructions for the assembly of amino acids into proteins from DNA to the rest of the cell

Translation

decoding of a mRNA message into a polypeptide chain

Transcription

process in which part of the nucleotide sequence of DNA is copied into a complementary sequence in RNA

Nucleotide

made up of 3 basic components- a 5-carbon sugar, a phosphate group, and a nitrogenous base

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