  The supernovae SN II & Ib/c make major stellar nucleosynthetic contributions
to the inventories of the stable nuclides during the chemical evolution of the
galaxy. A case study is performed here with the help of recently developed
numerical simulations of the galactic chemical evolution in the solar
neighbourhood to understand the contributions of the SN II and Ib/c by making a
comparison of the stellar nucleosynthetic yields obtained by two leading groups
in the field. These stellar nucleosynthetic yields differ in terms of the
treatment of stellar evolution and nucleosynthesis. The formulation for the
galactic chemical evolution is developed for the recently revised solar
metallicity of 0.014. Further, the recent nucleosynthetic yields of the stellar
models based on the revised solar metallicity are also used. The analysis
suggest that it could be difficult to explain in a self-consistent manner the
various features associated with the elemental evolutionary trends over the
galactic timescales by any single adopted stellar nucleosynthetic model of SN
II & Ib/c.
