Joined: Feb. 2006
|Quote (Southstar @ Jan. 02 2012,04:28)|
|Rather chance is used to express that we don't know what mutations will arise.|
And, perhaps more importantly, that mutations arise independently of their observable effects. In other words, there is no purposeful direction to which mutations occur. The mutational process is random with respect to phenotype.
Evolution, in contrast, is highly non-random, because the chance that a given mutation will be passed down to future generations does depend on phenotype.