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10 Cards in this Set
- Front
- Back
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Operon Model |
a group of structural and regulatory genes that function as a single unit |
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Regulator Gene |
located outside of the operon, codes for a repressor protein molecule that controls whether the operon is active |
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Promotor |
sequence of DNA where RNA polymerase attaches when a gene is to be transcribed |
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Operator |
short sequence of DNA where an active repressor binds, preventing RNA polymerase from attaching to the promotor-transcription therefore does not occur |
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Structural Genes |
one to several genes, coding for enzymes of a metabolic pathway that are transcribed as a unit |
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Chromatin Structure |
DNA+proteins DNA is wound around histones and unpacked and loose when active |
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Barr Body |
inactive chromosome |
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Epigenetic Inheritance |
variations in inheritance is not due to changes in the DNA nucleotide sequences |
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Genomic Imprinting |
expression of a gene depending on who you've received it from |
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Transcriptional Control |
most often involves regulatory proteins that are coded by regulatory genes, activators bond to the enhancer region and bonds the DNA molecule to the transcription factor complex |
