689.15  Estates by survivorship.--The doctrine of the right of survivorship in cases of real estate and personal property held by joint tenants shall not prevail in this state; that is to say, except in cases of estates by entirety, a devise, transfer or conveyance heretofore or hereafter made to two or more shall create a tenancy in common, unless the instrument creating the estate shall expressly provide for the right of survivorship; and in cases of estates by entirety, the tenants, upon dissolution of marriage, shall become tenants in common.