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The greatest riddle of evolution has been the following puzzle: while Darwin argued that new species emerge through a slow, gradual accumulation of tiny mutations, the fossil record reveals a very different scenario--the sudden emergence of whole new species, with no apparent immediate ancestors. This discrepancy has fueled heated debate among evolutionary theorists and has provided unfortunate fodder to creationists, who see it as proof that evolution doesn't happen at all.Now, in this provocative and timely book, leading paleoanthropologist Jeffrey Schwartz presents a groundbreaking and radical new theory of evolution, which brings together evidence from genetics, paleontology, embryology, and anatomy to solve this great outstanding riddle. Central to the new theory is the recent discovery of a special kind of gene, known as homeobox genes, which can cause dramatic mutations that express themselves suddenly in the form of a new species. Such a new species will appear to have arisen out of thin air, with no lineage of ancestors. The new theory preserves natural selection, but shows that it is not the primary engine driving evolution, after all.Writing with graceful prose and the expert knowledge only an insider can bring, Jeffrey Schwartz begins by taking readers on a fascinating journey through the whole history of evolutionary thinking and discovery, recounting the major events and disputes. He also introduces the intriguing puzzles encountered along the way in the study of human evolution and shows how, despite early alternative theories advanced by some of the greatest scientific minds of the nineteenth and twentieth centuries, gradualism became a matter of scientific orthodoxy. His account includes the stories behind such highlights as the infamous Piltdown hoax and the remarkable discovery of the astonishingly complete Lucy skeleton.Schwartz then introduces the series of important recent discoveries in developmental biology and genetics that paved the

Evolution (Biology) --- Fossils. --- Homeobox genes. --- Evolution (Biology). --- Fossils --- Homeobox genes --- Homeo box genes --- Homeotic genes --- Genes --- Paleontology --- Animal evolution --- Animals --- Biological evolution --- Darwinism --- Evolutionary biology --- Evolutionary science --- Origin of species --- Biology --- Evolution --- Biological fitness --- Homoplasy --- Natural selection --- Phylogeny

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The study of Hox genes is crucial not only in exploring the enigma of homeosis but also in understanding normal development at the fundamental molecular level. "Hox Gene Expression" starts with the amazing discovery of the homeobox twenty-three years ago and follows the exciting path thereafter of a series of breakthroughs in Genetics, Development and Evolution. It deals with homeotic genes- their evolution, structure, normal and abnormal function. Researchers and graduate students in Biology and Medicine will benefit from this integrated overview of Hox gene activities.

Homeobox genes. --- Evolutionary genetics. --- Genetic evolution --- Evolution (Biology) --- Genetics --- Homeo box genes --- Homeotic genes --- Genes --- Human genetics. --- Cytology. --- Developmental biology. --- Human Genetics. --- Cell Biology. --- Developmental Biology. --- Development (Biology) --- Biology --- Growth --- Ontogeny --- Cell biology --- Cellular biology --- Cells --- Cytologists --- Heredity, Human --- Human biology --- Physical anthropology --- Cell biology.