Final answer:
The CU pathway assembles F pili, which are longer and less numerous per cell compared to fimbriae. These pili aid in attachment to surfaces and facilitate the transfer of DNA between bacterial cells.
Step-by-step explanation:
The CU pathway assembles a specific type of pili called F pili or sex pili. These pili are longer and less numerous per cell compared to fimbriae. They aid in attachment to surfaces and play an important role in the transfer of DNA between bacterial cells, allowing for genetic diversity.