Which term describes the ability to control which genes are transcribed in response to the environment?

• A. Autosomes
• B. Genome
• C. DNA
• D. Gene regulation

Answer: (D)

Gene regulation describes the ability to control which genes are transcribed in response to environmental cues. This control happens at the transcriptional level through factors that turn RNA polymerase on or off, along with processes like chromatin remodeling and signaling pathways that adjust the activity of transcription factors. By turning specific genes on or off in response to nutrients, stress, hormones, or other signals, cells adapt their protein production to the current environment. For comparison, the genome is the entire set of genetic material, DNA is the molecule that carries genetic information, and autosomes are the non-sex chromosomes. The term that best captures the ability to regulate which genes are transcribed in response to the environment is gene regulation.