Final Answer:
A joint tenant can transfer his/her interest to an outside party through a process called "severance."
Step-by-step explanation:
Joint tenancy is a form of property ownership where each co-owner (joint tenant) has an equal share and the right of survivorship. The right of survivorship means that if one joint tenant passes away, their share automatically goes to the surviving joint tenants.
However, if a joint tenant wishes to transfer their interest to an outside party, they must sever the joint tenancy. Severance typically involves breaking the unity of interest, title, time, and possession, effectively converting the joint tenancy into a tenancy in common. Once severed, the joint tenant can freely transfer or sell their individual share to an outside party.