Question

Which of the following can regulate gene expression?

a. Enhancer sequences near gene loci
b. Spliceosomes
c. Transcription factors
d. Steroid hormones
e. All of the above

Answer 1

Option (e), Enhancer sequences, spliceosomes, transcription factors, and steroid hormones all play roles in regulating gene expression, so the correct answer is 'All of the above.'

Step-by-step explanation:

The elements that can regulate gene expression include enhancer sequences near gene loci, spliceosomes, transcription factors, and steroid hormones. Enhancers boost gene transcription, spliceosomes alter RNA post-transcription, transcription factors expedite transcription by aiding in the binding of RNA polymerase to DNA, and steroid hormones can initiate transcription by entering cells and affecting gene expression through intracellular receptors.

Therefore, the correct answer to which of the following can regulate gene expression is e. All of the above.