Final answer:
SnRNPs and snoRNPs are part of spliceosomes, which are specific nuclear bodies and their associated proteins that facilitate the assembly and function of the SnRNPs.
Step-by-step explanation:
snRNPs and snoRNPs are part of spliceosomes, which are specific nuclear bodies and their associated proteins that facilitate the assembly and function of the SnRNPs. Spliceosomes are responsible for splicing pre-mRNAs, which involves a sequential series of cuts and ligations necessary to process the mRNAs. SnRNPs are particles composed of RNA and proteins that bind to specific sites in an mRNA and draw the two splice sites together to form a spliceosome.