This study presents the early genetics pioneer Bateson’s explanation of how small unit factors influence the traits we see in living beings. It traces the emergence of mutation as a central concept and shows why genetics became a powerful tool for understanding life.

The book frames a shift from broad, vague notions of variation to a precise, laboratory–style analysis of how inheritance works. It argues that studying heredity reveals the inner nature of organisms and opens new ways to ask and answer questions about evolution.

Foundations of Mendelian analysis and the idea of unit characters or factors
Connections between variation, heredity, and evolution
Examples and discussion from early genetics to illustrate key concepts
Context for how mutation fits into the broader theory of biology

Ideal for readers curious about the origins of genetic science and its impact on how we understand living things.

Book Description

These lectures, published at Yale in 1913, illuminate the formation of theories that are central to the modern study of genetics, heredity and evolution. In them, William Bateson (1861-1926) chronicles the conflicting and developing theories on taxonomy, speciation, variation and hybridisation, using a wide taxonomic range of detailed examples.

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