Stuttering is a speech disorder characterized by repetition of sounds, syllables, or words; prolongation of sounds; and interruptions in speech known as blocks. An individual who stutters exactly knows what he or she would like to say but has trouble producing a normal flow of speech.
The 3 types of RNA are mRNA is a long strand, the tRNA is shaped  like a clover leaf pattern. The third shape is Ribosomal RNA, it  is a very complex shape.
Three Major Types of RNA. - Messenger RNA (mRNA) - Long strands of RNA nucleotides that are formed complementary to one strand of DNA. They travel from the nucleus to the ribosome to direct the synthesis of a specific protein. - Ribosomal RNA (rRNA) - Associates with proteins to form ribosomes in the cytoplasm. - Transfer RNA (tRNA) - Smaller segments of RNA nucleotides that transport amino acids to the ribosome.