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Chpt. 11 DNA & GENES

TermDefinition
DNA Replication DNA copied in chromosomes
Double Helix DNA that is composed of two strands twisted together
Nitrogenous Base carbon ring structure that contains on or more atoms of nitrogen
Codon name of group of 3 nitrogenous bases in mRNA code for 1 amino acid
Messenger RNA sents instructions from DNA in the nucleus to the cytoplasm
Ribosomal RNA binds to the mRNA & uses the instructions to assemble the amino acids in the correct order
Transcription enzymes make an RNA copy of a portion of DNA strand
Transfer RNA 3rd type; supplier
Translation process of converting the info. in a sequence of nitrogenous bases in mRNA into a sequence of amino acids in protein
Chromosomal Mutation changes in chromosomes
Frameshift Mutation mutation in single base is added or removed
Mutagen any agent that causes change in DNA
Mutation any change in DNA sequence
Point Mutation change in single base pair in DNA
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