Dr. Simon Conway Morris
Convergent Evolution is a fascinating idea. Here are some aspects that may interest you.
1 The Origin of Life may have been, not a one time fluke chemical event, but the most stable chemical system in that environment over millions of years – specifically that which best survived the daily UV (day and night cycle), and turned it into a way to become more stable – stable in two ways, 1. stable in keeping what works, and 2. stable in changing what doesn’t.
2. Convergent evolution may work for catabolic and anabolic processes too – such that the better catabolic and anabolic methods are selected for across all life.
3. Being bipedal, not only freed the hands for tools, but perhaps more importantly allowed the mother to hold, carry, caress, and soothe the baby. Thus developing strong social bonds. I tend to think social bonds are a part of convergent evolution.
This is an article on Dr. Morris’s book.
UV PAPER http://www.daviddarling.info/encyclopedia/U/UV_origin_of_life.html
Catabolic and Anabolic evolved, but they did not blend.