[Hot Tabasco]

The odds of that based on random mutations (most mutations are bad) would be really high.

A lot of mutations are caused by flaws in one member's DNA but the recipient mutated member never survives, thus allowing the pure species DNA to continue on........

Just think of how many species of birds are similar to each other but yet never cross breed due to the hard wiring of their own specific dna that prevents them from being attracted to that slightly different species..........

[bert]

so far as we know, Pikaia gracilens started it all. Pikaia is the earliest known chordate fossil

There lots and lots of mutations until there was us