Eukaryotic Gene Expression Problem Set

Problem 10: Regulating mRNA synthesis


Which of the following is NOT involved in regulating the synthesis of RNA in the eukaryotic nucleus?
A. active genes in euchromatin, and inactive genes in heterochromatin
B. amplification of some genes such as rRNA genes
C. use of different RNA polymerases to transcribe different classes of RNA
D. spliceosomes that stimulate synthesis of intron-containing hnRNAs
Spliceosomes are RNA-protein complexes active in processing of nuclear RNA transcripts in eukaryotic cells. Spliceosomes are not believed to act in regulation of RNA synthesis in the nucleus.
E. enhancers that can stimulate specific promoters

The Biology Project
University of Arizona
Tuesday, November 4, 1997
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