Final answer:
The legacy name (11-2E-8V3)RNP 10 refers to an RNP World, a coevolutionary stage where RNAs and proteins formed an early biosystem. The spliceosome is the complex that removes introns from eukaryotic pre-mRNA, and rRNA processing involves the production of 5.8S, 18S, and 28S rRNA from a 45S precursor.
Step-by-step explanation:
The legacy name (11-2E-8V3)RNP 10 is more accurately described as the proposition of an RNP World instead of an RNA World. This concept posits that proteins and RNA coevolved, leading to an early biosystem where RNA and proteins (ribonucleoproteins, or RNPs) worked together before the development of DNA-based life (DNP World). The Self-Referential Model (SRM) is proposed in this context, suggesting a complex interplay of proteins and RNA during the early stages of life. This is supported by the mimicry of tRNAs by translation factors and a move from RNA having a central role to a more collaborative RNP system.
The protein complex responsible for removing intron-encoded RNA sequences from primary transcripts in eukaryotes is called the spliceosome. This complex is essential for the processing of pre-mRNA into mature mRNA that can be translated into polypeptides.
During ribosomal RNA (rRNA) processing in eukaryotic nuclei, a large 45S precursor transcript is transcribed, which is then processed to form the smaller rRNA components, including 5.8S, 18S, and 28S rRNAs. The 'S' in these names stands for Svedberg units, which are indicative of the rRNA's sedimentation rates during ultracentrifugation.