Control of Eukaryotic Gene Expression

Control of Eukaryotic Gene Expression Can Happen at Many Points

• DNA unpacking
• Transcription
• RNA processing
• Transport to the cytoplasm
• Translation and mRNA degradation
• Post-translational modification of proteins
• Degradation of proteins

Figure 19.7, page 352, Campbell's Biology, 5th Edition

Opening the Chromatin Packing

Chromatin is the collection of DNA and proteins that makes a chromosome.

• When it is tightly packed, it is called heterochromatin, and cannot be transcribed.
• When it opens up, it is called euchromatin, and can be transcribed.

Figure 19.1(a)/19.1(b), page 345, Campbell's Biology, 5th Edition; unknown source