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A Critique of the Theory of Evolution cover

A Critique of the Theory of Evolution

The lectures begin by reassessing the classical evidence for biological evolution, distinguishing different senses of evolution and evaluating comparative anatomy, embryology, and the fossil record. They then explain Mendelian principles of segregation and independent assortment and show that wild and domesticated organisms obey the same hereditary laws, encompassing sex-linked traits, duplications, losses, and minor variations. The chromosomal basis of heredity and the composition of the germ plasm are examined, including linkage groups and localization of hereditary factors. Mutation, the effects of selection on factors, and the role of natural selection are analyzed, leading to the view that chance variation together with reproductive multiplication underlies evolutionary change.

By Thomas Hunt Morgan
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Science - Biology

About This Book

The lectures begin by reassessing the classical evidence for biological evolution, distinguishing different senses of evolution and evaluating comparative anatomy, embryology, and the fossil record. They then explain Mendelian principles of segregation and independent assortment and show that wild and domesticated organisms obey the same hereditary laws, encompassing sex-linked traits, duplications, losses, and minor variations. The chromosomal basis of heredity and the composition of the germ plasm are examined, including linkage groups and localization of hereditary factors. Mutation, the effects of selection on factors, and the role of natural selection are analyzed, leading to the view that chance variation together with reproductive multiplication underlies evolutionary change.

About the Author

Morgan, Thomas Hunt portrait

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.

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