As a Sociologist, I'm not surprised at all by this relationship. When I looked up Francis Crick, I found that the story about Walter Crick and Charles Darwin was in the first chapter of a recent book on him, Francis Crick: Discoverer of the Genetic Code (Eminent Lives Series). Interest in science, especially to the degree that is necessary to make great discoveries, is not an accident. It must be nurtured like any other interest, skill or talent. That Walter Crick, an amateur naturalist and fossil collector, was corresponding with one of the greatest scientist of his day shows that he had a great interest in science and followed it closely. From the Morning Edition story, it sounds like Walter Crick was an extroverted, adventurous man who took delight in the world around him and took the time to explore science. It does not surprise me that his offspring had the intelligence and interest to pursue a career in science. The study of DNA is closely related to the study of Evolution. It would have surprised me if his grandfather's tales of corresponding with the progenitor of the Theory of Evolution and other scientific interests didn't influence Francis Crick in his interests as a child and eventual professional pursuits.
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