For decades after Darwin, the field of biology faced a fundamental crisis: Where was the physical engine of inheritance? The greatest theories of the age were in conflict, leaving the mechanism of evolution a mystery. Enter Thomas Hunt Morgan, a brilliant but relentless skeptic who trusted nothing he couldn't observe. His search for the physical basis of heredity led him to a small, cluttered laboratory at Columbia-the infamous Fly Room. Surrounded by thousands of fruit flies, Morgan and his young, rebellious team were determined to prove all existing theories wrong. Then, in 1910, the breakthrough came: the discovery of a single, mutant fly with white eyes. The Architects of Inheritance is the dramatic story of how this tiny insect and the brilliant minds in the Fly Room unified a broken science. It chronicles Morgan's journey to prove that the 'factors' of heredity-genes-were material units physically located on the chromosomes, launching the modern age of genetics and forever changing our understanding of life itself. Approx.164 pages, 30400 word count