If the legatee does not survive the testator, the legacy cannot take effect, but shall lapse and form part of the residue of the testator’s property, unless it appears by the Will that the testator intended that it should go to some other person.
2)section 105 of indian succession act provides that if legatee does not survive the testator the legacy lapses
3) co beneficiary would become the sole beneficiary
4) legal heirs of primary beneficiary cannot claim any benefits