Following publication of the key findings from the Stage 1 analysis, which I outlined in an Oral Statement in February 2012, the Stage 2 research has also now been completed.
Ar ôl cyhoeddi canfyddiadau allweddol dadansoddiad Cam 1, a amlinellais mewn Datganiad Llafar ym mis Chwefror 2012, mae gwaith ymchwil Cam 2 bellach wedi'i gwblhau hefyd.