Which of these choices listed are shared similar characteristics and features in eukaryotic and prokaryotic gene expression?
a. Presence of a promoter that binds to RNA polymerase.
b. Presence of alternative splicing that generates variations of protein after primary RNA transcript is made.
c. Presence of a promoter-proximal operator that binds to a transcriptional repressor.
d. Presence of a single transcription unit that will produce multiple proteins.
e. Presence of promoter-proximal sequences/elements/motifs that regulate gene expressionPresence of sequences upstream of a promoter that bind proteins that regulate gene expression.
f. Presence of distal enhancers that bind transcription factors.