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Practice Problem 5

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Wize University Biology Textbook > Gene Expression & Regulation

Eukaryotic Epigenetic Regulation

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A histone-modifying enzyme adds acetyl groups to lysines on the tails of nucleosome core histones. Lysine is normally positively charged, but this modification neutralizes the charge. What might happen if you mutated this enzyme so that it became non-functional?
More Eukaryotic Epigenetic Regulation Questions:
Practice: Epigenetics
Epigenetic changes do NOT...
Epigenetic changes do NOT...
The expression of the Wingless (Wnt) gene in drosophila results in the normal development of fly wings. However, when the Wnt gene is not expressed, the flies have develop very short wings. You are studying a particular fly in which the expression levels of Wnt is linked to a histone acetylase, which acetylates lysines near the Wnt gene. How might this acetylation affect the fly?
Which of the following can regulate the initiation of transcription?
Practice: Eukaryotic Cells
Certain proteins are nearly universal amongst eukaryotic cells. However, when comparing different organisms, the sequences of the genes that encode these proteins can vary quite a bit.
Provide two explanations as to how this may be possible.