Introduction: The process of splicing in eukaryotes is a fundamental process in gene expression that involves the removal of introns from pre-mRNA and the joining of exons to form mature mRNA. It is a complex and highly regulated process that is essential for the proper functioning of cells.

Legacy of Organic Evolution: The process of splicing is a legacy of organic evolution, as it is found in all eukaryotes, from simple unicellular organisms to complex multicellular organisms like humans. It is believed that splicing evolved as a mechanism to increase the diversity of proteins that could be generated from a limited number of genes.

Indicator of Complexity of Human Genome: The process of splicing is an indicator of the complexity of the human genome. Humans have a much larger number of genes than simpler organisms, but the actual number of individual proteins that can be generated is much larger due to alternative splicing. This process allows different combinations of exons to be joined together, resulting in different protein isoforms with different functions.

Dominance of RNA World: The process of splicing also represents the dominance of the RNA world in early evolution. It is believed that RNA molecules were the first biological molecules to have the ability to catalyze chemical reactions, including splicing. This ability allowed for the evolution of more complex organisms that could regulate gene expression and generate a wider variety of proteins.

Reminiscent of Antiquity: The process of splicing is reminiscent of antiquity, as it is a fundamental process that has been conserved throughout evolution. It is interesting to note that some of the earliest discoveries in molecular biology, such as the identification of introns and exons, were made by studying simple organisms like yeast.

Conclusion: In conclusion, the process of splicing in eukaryotes is a complex and highly regulated process that is essential for the proper functioning of cells. It is a legacy of organic evolution, an indicator of the complexity of the human genome, and represents the dominance of the RNA world in early evolution.

Option (2) is correct answer.