Polycomb Group (PcG) Gene Mutants Cause Ectopic Expression of Antennapedia

question 18

Multiple Choice

Polycomb group (PcG) gene mutants cause ectopic expression of Antennapedia (Antp) and other homeotic genes. The PcG protein encoded by the PgG gene has a domain that binds to methylated histone H3. This finding supports which of the following hypotheses?

• A) that PcG activates Antp genes in tissues
• B) that PcG binds to Antp genes and serves as a transcription activator
• C) that PcG mutants lack Antp mRNA compared to the wildtype
• D) that PcG is allosteric activator of RNA polymerase II
• E) that PcG repress transcription by interacting with chromatin

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Definitions:

Long Hedge

A strategy used to mitigate the risk of price increases in commodities or securities by taking a long position in futures contracts.

Spot Market

A public financial market in which financial instruments or commodities are traded for immediate delivery.

Futures Market

A financial market where participants can buy and sell futures contracts, which are agreements to buy or sell an asset at a future date at a price agreed upon today.

Simultaneous

Occurring, operating, or done at the same time.