I Feel That One Species, Mankind, Doesn't

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.

Two Forms Or Species Are Sympatric, If They Occur Together, That Is If Their Areas Of Distribution Overlap Or Coincide. Two Forms (or Species) Are Allapatric, If They Do Not Occur Together, That Is If They Exclude Each Other Geographically. The Term Allopatric Is Primarily Useful In Denoting Geographic Representatives.

Every Politician, Clergyman, Educator, Or Physician, In Short, Anyone Dealing With Human Individuals, Is Bound To Make Grave Mistakes If He Ignores These Two Great Truths Of Population Zoology: (1) No Two Individuals Are Alike, And (2) Both Environment And Genetic Endowment Make A Contribution To Nearly Every Trait.

Our Understanding Of The World Is Achieved More Effectively By Conceptual Improvements Than By Discovery Of New Facts