The Conserved Adenine Nucleotide in Introns Serves as The

Multiple Choice

The conserved adenine nucleotide in introns serves as the:

A) site for intron recognition for the spliceosome.
B) branch point for the formation of the intronic "lariat."
C) key point for ribosome assembly and initiation of translation.
D) initial site of intronic RNA digestion and removal.
E) molecular signal for RNA splicing.