In Kesavananda Bharati and others v. State of Kerala and Another, AIR 1973 SC 1461, it has been observed that 'one cannot legally use the constitution to destroy itself'.

Examine the significance of the above statement in the context of "Right to Equality" as a basic feature of the Indian constitution. Also discuss whether the 77^thand 85^th constitutional amendment laying down reservation in promotions with consequential seniority have obliterated the constitutional limitations mentioned in Article 16(4)?