G. Ledyard Stebbins Quotes

Top 2 wise famous quotes and sayings by G. Ledyard Stebbins

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G. Ledyard Stebbins quotes: No biologist has actually seen the origin by evolution of a major group of organisms. No biologist has actually seen the origin by evolution of a major group of organisms.
G. Ledyard Stebbins quotes: After a greater or lesser number of generations the mutants are eliminated. After a greater or lesser number of generations the mutants are eliminated.