There Is More To Biology Than Rats,

I Had Found Again And Again That The Most Aberrant Population Of A Species - Often Having Reached Species Rank, And Occasionally Classified Even As A Separate Genus - Occurred At A Peripheral Location, Indeed Usually At The Most Isolated Peripheral Location.

The Reduced Variability Of Small Populations Is Not Always Due To Accidental Gene Loss, But Sometimes To The Fact That The Entire Population Was Started By A Single Pair Or By A Single Fertilized Female. These 'founders' Of The Population Carried With Them Only A Very Small Proportion Of The Variability Of The Parent Population. This 'founder' Principle Sometimes Explains Even The Uniformity Of Rather Large Populations, Particularly If They Are Well Isolated And Near The Borders Of The Range Of The Species.

There Is More To Biology Than Rats, Drosophila, Caenorhabditis, And E. Coli.

Evolution, Thus, Is Merely Contingent On Certain Processes Articulated By Darwin: Variation And Selection. No Longer Is A Fixed Object Transformed, As In Transformational Evolution, But An Entirely New Start Is, So To Speak, Made In Every Generation.

All Interpretations Made By A Scientist Are Hypotheses, And All Hypotheses Are Tentative. They Must Forever Be Tested And They Must Be Revised If Found To Be Unsatisfactory. Hence, A Change Of Mind In A Scientist, And Particularly In A Great Scientist, Is Not Only Not A Sign Of Weakness But Rather Evidence For Continuing Attention To The Respective Problem And An Ability To Test The Hypothesis Again And Again.