plz explain the above statement

plz explain the above statement Toe split-gene arrangements represent probably an ancient feature of genome intrnn« is reminiscent of antiquitv, and the represents the RNA-world

Dear student ,,primary transcript consists of introns and exons. "Presence of introns is reminiscent of antiquity" implies that introns were previously in past an important pieces of information used to form mRNA but now are of no importance. "Process of splicing represents the dominance of RNA world" implies that RNA is the one that decides whether to keep introns or not, DNA kept the both.