SECTION 5
Help!
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| an ______ gene is one that is transcribed into RNA | expressed
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| a group of genes that operate together is known as an ______ | operon
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| the lac genes are turned off by _________ and turned on by the presence of ________ | repressors, lactose
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| region of chromosome in an operon to which the repressor binds when the operon is turned off | operator
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| most ___________ genes are controlled individually and have regulatory sequences that are much more complex that those of the _______ operon | eukaryotic, lac
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| helps position RNA polymerase by marking the point at which transcription begins | TATA box
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| area on gene where repressor binds and stops transcription | operator
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| a DNA binding protein that stops transcription and turns off the gene | repressor
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| controls the organs and tissues that develop in various points of the embryo, determines an animals basic body plan | hox genes
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| t/f most hox genes are arranged in almost the exact order they are expressed in the body | true
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| t/f no common patterns of genetic control exist because all these genes have descended from the genes of common ancestors | false
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