Some possible bearings of genetics on pathology

Name: Some possible bearings of genetics on pathology
Author: Thomas Hunt Morgan

The lecture examines how Mendelian genetics illuminates hereditary disorders by explaining inheritance mechanisms and their population consequences. Through experimental crosses, including fruit-fly examples, it shows how recessive mutations can persist hidden in carriers and later reappear, and how dominant and recessive variants differ in their probabilities of spread depending on selection and mating patterns. The discussion considers the effects of out-breeding, natural selection, and chance on the retention or loss of defective genes and draws implications for understanding the appearance and distribution of human malformations and hereditary conditions.

By Thomas Hunt Morgan

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About the Author

Thomas Hunt Morgan

Thomas Hunt Morgan was an influential American geneticist known for his pioneering work in the field of genetics and evolution. He is best recognized for his research on the fruit fly Drosophila melanogaster, which laid the groundwork for modern genetics. Morgan's notable works include "A Critique of the Theory of Evolution" and "Sex-linked Inheritance in Drosophila," where he explored the mechanisms of heredity and the implications of genetic variation. His contributions significantly advanced the understanding of genetic inheritance and adaptation, earning him the Nobel Prize in Physiology or Medicine in 1933. Morgan's legacy continues to impact the fields of genetics and evolutionary biology.