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Hour Exam 1
Hour Exam 1

... sensitivity over time. 9. ( 6 points) a. How does growth in the presence of histidine (an amino acid) effect the amino acid phenylalanine biosynthetic operon expression in E. coli bacteria with a mutation of Phe t-RNA synthetase so that it puts histidine on Phe-t-RNA? Describe the mechanism of this ...
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Eukaryotic Gene Control 14-15
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The Florida State University College of Arts and Sciences
The Florida State University College of Arts and Sciences

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Biology 340 Molecular Biology

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Epigenetics in learning and memory

While the cellular and molecular mechanisms of learning and memory have long been a central focus of neuroscience, it is only in recent years that attention has turned to the epigenetic mechanisms behind the dynamic changes in gene transcription responsible for memory formation and maintenance. Epigenetic gene regulation often involves the physical marking (chemical modification) of DNA or associated proteins to cause or allow long-lasting changes in gene activity. Epigenetic mechanisms such as DNA methylation and histone modifications (methylation, acetylation, and deacetylation) have been shown to play an important role in learning and memory.
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