Question

question 24
what is regulated gene expression?
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options:
○ a a process by which microarrays detect which cells are producing which proteins
○ b a method for blotting dna fragments onto a positively charged membrane
○ c the cell’s ability to turn on and off genes at particular times
○ d the unique gene pattern created by a genetic cross

Explanation:

To determine the correct answer, we analyze each option:

• Option a: Microarrays detect gene expression but don't define regulated gene expression. Eliminate.
• Option b: This describes a blotting technique (like Southern blotting), not gene expression regulation. Eliminate.
• Option c: Regulated gene expression refers to a cell controlling when genes are active (on) or inactive (off) to respond to needs. This matches.
• Option d: A genetic cross's gene pattern is about inheritance, not regulation. Eliminate.

Answer:

c. the cell's ability to turn on and off genes at particular times