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DNA & Biotechnology (Ch. 13-16)

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Term
Definition
DNA   deoxyribonucleic acid, the material that contains the information that determines inherited characteristics  
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nucleotide   nucleic acid chain, a subunit that has a sugar, phosphate and base. There are 4 different bases: adenine, thymine, cytosine and guanine. (AT & CG are complementary pairs and the fit together like a puzzle piece in DNA)  
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replication   the duplication of a DNA molecule  
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mutation   a change in the genetic material of an organism  
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RNA   ribonucleic acid, molecule present in all living cells that help produce protein. There are 4 different bases: adenine, uracil, cytosine and guanine. (AU & CG are complementary pairs and the fit together like a puzzle piece in RNA)  
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ribosome   cell organelle made up of RNA and protein  
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biotechnology   the use and application of living things and biological processes  
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artifical selection   human practice of breeding animals or plants with desired traits  
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genetic engineering   a technology in which the genome of a living cell is modified for medical or industrial use  
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clone   an organism, cell, or piece of genetic material that is genetically identical  
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bacteriophage   a virus that infects a bacteria  
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messenger RNA   (mRNA); carry copies of instructions to assemble amino acids into protein from the nucleus to ribosomes in the cytoplasm  
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ribosomal RNA   (rRNA); as many as 80 proteins that assemble on the ribosome  
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transfer RNA   (tRNA); carry amino acid to the ribosome and match them to the coded mRNA  
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transcription   the process of copying a base sequence from DNA to RNA  
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polypeptide   a chain of protein formed by joining amino acids  
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codon   three consecutive bases that specify an amino acid  
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translation   decoding of an mRNA message into a protein  
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genome   full set of genetic information that an organism carries in its DNA  
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karyotype   image of chromosomes in pairs by size (diploid)  
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sex chromosome   chromosome that determines gender  
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autosomes   chromosomes that do not include the sex chromosomes  
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sex linked gene   genes that are passed on through the X or Y chromosomes  
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pedigree   a chart that shows the presence or absence within a family  
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selective breeding   allowing only animals with wanted characteristics to produce the next generation  
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inbreeding   breeding individuals with similar characteristics  
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hybridization   cross of dissimilar individuals to bring together the best of both organisms  
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transgenic   contain genes from other species  
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