A Key Feature of Regulatory Systems Involving Deletion of a Gene

question 88

Multiple Choice

A key feature of regulatory systems involving deletion of a gene is:

• A) the DNA deletion event must be passed to progeny cells
• B) the cell can modulate the level of expression of this gene (one cell can express the gene at different levels) in response to different growth conditions
• C) the deletion event can occur in any cell type at any time
• D) the DNA deletion event must not be passed to progeny or germ?line cells
• E) the sigma factor of RNA polymerase is altered

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Definitions:

Pre-Warmed Test Tubes

Test tubes that are heated to a specific temperature before use to avoid shock or variation in experimental conditions, often used in laboratory procedures.

Venipuncture Sample

A method of obtaining a blood sample by puncturing a vein, typically with a needle, for diagnostic or treatment purposes.

Rigid Vein

A vein that has become hard or inflexible, potentially due to inflammation, disease, or intravenous catheter insertion.

Blood Culture

A laboratory test that checks for the presence of bacteria, fungi, or other microorganisms in the blood.