Final answer:
Transfer begins from OriT which is nicked by TraY/TraI complex at ori site.
Step-by-step explanation:
The transfer of genetic material begins from the OriT site, which is nicked by the TraY/TraI complex. OriT acts as the origin of transfer in bacterial conjugation. The TraY/TraI complex recognizes the ori site and initiates the transfer process by creating a single-strand break in the DNA.