The Neutral Theory states that:
1)For selectively neutral mutations,the rate of molecular evolution is equal to the rate at which these mutations occur in the population.
2)The rate of evolution does not depend on population size,the efficiency of selection,or peculiarities of the mating system.
3)If the neutral mutation rate is constant,then nucleotide and amino acid substitutions,which are due to mutations,should occur in clocklike fashion in all evolving lineages.