Term
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Definition
| Changes in the expression of a gene or set of genes that occur without changing the DNA sequence. Changes are reversible, but sometimes are stable and hereditable. |
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Term
| What two processes are involved in Epigenetics? |
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Definition
1. DNA Methylation
2. Chromosomal protein alterations |
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Term
| Where does DNA methylation occur? |
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Definition
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Term
| What is DNA methyltransferase? |
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Definition
| enzyme that catalyzes the addition of a methyl group to the 5`carbon to form 5-methyl cytosine |
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Term
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Definition
| DNA regions rich in C and G doublets |
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Term
| What is a maintenance methylase? |
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Definition
| enzyme that catalyzes the formation of 5 methylcytosine in the new DNA strand |
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Term
| What enzyme is involved in catalyzing the removal of the methyl group from cytosine? |
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Definition
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Term
| What happens when acetyl groups are added to histones? |
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Definition
| Transcription is activated |
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Term
| Which enzyme is involved in the addition of acetyl groups to histones? |
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Definition
| Histone acetyltransferase |
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