The Quantitative Output of a Gene Depends in Part on the Relative

question 51

Multiple Choice

The quantitative output of a gene depends in part on the relative affinities of transcription regulators. In the following graphs, the red color indicates high gene expression and blue color indicates low gene expression. The expression level is plotted as a function of the concentrations of two transcription regulatory proteins, an activator (A) and a repressor (R) . Every other parameter being identical, which graph corresponds to a system where the affinity of protein A for the cis?-regulatory sequences is higher than that of protein R? Which graph corresponds to a system that shows a "leakier" expression?

• A) Graph 1; Graph 1
• B) Graph 1; Graph 2
• C) Graph 2; Graph 1
• D) Graph 2; Graph 2

---

Definitions:

Storeowner

is an individual who owns and possibly operates a retail establishment, responsible for the management, decision making, and financial outcomes of the store.

Profitable to Develop

Refers to projects or initiatives that are expected to yield a financial gain upon development or implementation.

Complicated Technology

Advanced and often sophisticated technology that may be difficult to understand or operate.

Simple Technology

Technology that is straightforward, easy to use, and not complicated by advanced features, often implying a lower level of sophistication.