The right of survivorship is preferred to the last will.

Explanation

In a joint tenancy, the right of survivorship overrides the will of a deceased tenant — the surviving tenant takes the whole, and the deceased's testamentary disposition of his share is defeated.

Where this applies

• A joint tenant dies and their will tries to leave their share to someone else.
• A deceased co-owner's will is defeated by the surviving owner's right of survivorship.