Factors affecting electromorph mutation rates in man: an analysis of data from Australian Aborigines.

The constraints of molecular size and structure on the relative magnitudes of electromorph mutation rates as calculated indirectly have been studies using data for Australian Aborigines. The role of sample size in detecting rare electromorphs is important. In addition, subunit size shows a positive and subunit number a negative correlation with mutation rate. The differences in mutation rates were 2--9-fold when calculated for different categories of the data. The importance of physicochemical constraints are discussed.