quote:
Darwin based his original account on a Lamarckian view of inheritance....
This isn't quite correct. Darwin's theory was not based on any theory of inheritance. While it is true that Darwin did speak of the theory of inheritance current to his day, namely pangenesis and the possibility of the inheritance of acquired characteristics, his theory of evolution was independent of any particular theory of inheritance.
The only particulars of inheritance that are necessary to the theory of evolution is that physical characteristics are largely inherited, and that new variations of heritable physical characteristics can spontaneously appear; both of these were known even at that time to occur from observation. The exact mechanisms by which these occur are unimportant, and even if modern genetics were somehow found to be largely erroneous it would not at all be a significant set back for the theory of evolution.