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This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This ...

This classic study of planarian regeneration by the Nobel laureate Thomas Hunt Morgan is a must-read for students of biology and genetics. Morgan's experiments explored the fascinating ability of these flatworms to regenerate lost body parts, shedding light on the mechanisms of genetic inheritance and cellular differentiation. This book is a groundbreaking work in the field of genetics and a fascinating read for anyone curious about the myster...

This work has been selected by scholars as being culturally important, and is part of the knowledge base of civilization as we know it. This work was reproduced from the original artifact, and remains as true to the original work as possible. Therefore, you will see the original copyright references, library stamps (as most of these works have been housed in our most important libraries around the world), and other notations in the work. This ...

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This work has been selected by scholars as being culturally important and is part of the knowledge base of civilization as we know it.This work is in the public domain in the United States of America, and possibly other nations. Within the United States, you may freely copy and distribute this work, as no entity (individual or corporate) has a copyright on the body of the work.Scholars believe, and we concur, that this work is important enough...

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Excerpt from Contribution to the Embryology and Phylogeny of the Pycnogonids, Vol. 5: A Dissertation, Presented to the Board of University Studies for the Degree of Doctor of PhilosophyIt is here seen that the ectoblast cells over one hemisphere are somewhat higher than at the opposite, and I find this very con stant in sections of both species at this stage of development. After this it becomes difficult to follow out the fate of the germ lay...

Travel a veritable timeline with Kurt, a farm boy in rural Indiana, from the early 1940 s that takes you into the twenty fi rst century. Studying by a kerosene lamp, graduating from college, serving in the U.S. Army, raising a family. He completed one career then fi nds his most rewarding career, working with children as he drives a school bus - that began in the fi rst grade.

Excerpt from The Genetic and the Operative Evidence Relating to Secondary Sexual CharactersThere are a few races of poultry that have two kinds of males, one with the feathering of the ordinary cock, the other with the feathering of the hen. The Hamburgs and the Campines are perhaps the best known races of this sort. Convention amongst breeders, in certain countries, has determined that the cock-feathered bird shall be the standard, and at oth...