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DNA nd Genes

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Term
Definition
Nucleotide   Small units that make up DNA  
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Double Helix   two strands of DNA wind around each other like a twist ladder  
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Base Pairing Rules   Thymine always pairs with Adenine and Cytosine always pairs with Guanine  
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Replecation   The process by which DNA is copied during the cell cylce  
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DNA polymeraes   Bonds the new nucleotides together  
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Central Dogma   A theory that states that information flows in one direction, From DNA to RNA to proteins  
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RNA   A chain of nucleotides, each made of sugar, a phosphate group, and a nitrogen base.  
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Transcription   Process of copying a sequence of DNA to produce a complementary strand of RNA  
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RNA polymerase   enzymes that bond nucleotides together in a chain to make a new RNA molecule  
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Messenger RNA   An intermediate message that is translated to form a protein  
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Ribosomal RNA   Forms part of Ribosomes, a cells protein factories  
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Transfer RNA   Brings amino acids from the cytoplasm to a ribosome  
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Translation   The process that converts an mRNA message into a polypeptide  
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Stop Codons   Signals the end of the amino acid chains  
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Start Codon   Signals the start of an amino acid chain  
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Anticodon   A set of three nucleotides that is complementary to and mRNA codon  
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Cells   Basic Unit of life  
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