Final answer:
When U6 snRNA interacts with U2 snRNA, they form part of the spliceosome complex, which is responsible for removing introns from pre-mRNA to create mature mRNA in the splicing process.
Step-by-step explanation:
When U6 snRNA tries to interact with U2 snRNA, it is a part of the splicing process of pre-messenger RNA (pre-mRNA) during gene expression in eukaryotic cells. Here's what happens: U6 snRNA, along with other small nuclear ribonucleoproteins (snRNPs), forms the spliceosome. The spliceosome is a complex that facilitates the removal of introns, which are non-coding sequences, from the pre-mRNA. Upon interaction, U6 snRNA displaces U1 at the 5' splice site and pairs with U2 snRNA, forming a complex that activates the splicing reaction. This dynamic interaction allows the catalytic center of the spliceosome to be assembled, thus bringing the pre-mRNA's exons closer together for splicing. Consequently, introns are excised, and exons are joined to form a mature messenger RNA (mRNA) that can be translated into a protein.