DNA - an organism's genetic material., Gene - a segment of DNA on a chromosome., Nucleotide - a molecule made of a nitrogen base, a sugar and a phosphate group., RNA - a type of nucleic acid that carries the code for making proteins from the nucleus to the cytoplasm., Replication - The process of copying a DNA molecule to make another DNA molecule., Transcription - the process of making mRNA from DNA, Translation - The process of making a protein from RNA., Mutation - a permanent change in the sequence of DNA, deletion mutation - one or more nitrogen bases are left out of the DNA sequence., substitution mutation - the nitrogen base is replaced by a different nitrogen base., insertion mutation - one or more nitrogen bases are added to the DNA., Nitrogen Base - A molecule that contains nitrogen and has the chemical properties of a base., DNA nitrogen base - adenine (A), cytosine (C), guanine (G), and thymine (T)., RNA Nitrogen base - adenine (A), cytosine (C), guanine (G), and uracil (U),

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