If accepted by the grantee, the conveyance of an estate or interest in real property in lieu of dower, to take effect on the death of the grantor, will bar such grantee's right of dower in the real property of the grantor. If the conveyance was made when the grantee was a minor or during the marriage, the grantee may waive title to such real property and demand dower.
When a conveyance which is intended to be in lieu of dower fails through any defect to be a bar thereto, and the widow or widower availing of such defect demands dower, the estate or interest conveyed to such widow or widower shall cease.