How does dimerized STAT5 affect gene expression in the nucleus?

• A. Dimerized STAT5 binds to DNA, acting as a transcription factor to regulate gene expression.
• B. Dimerized STAT5 inhibits gene expression.
• C. Dimerized STAT5 phosphorylates nuclear receptors.
• D. Dimerized STAT5 binds to the cell membrane.

Answer: (A)