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Lucas (1850, p. 194) recognizes three methods of inheritance, which he calls respectively that of election, of mixture, and of combination. They are thus defined Election results in imprinting on some or all parts of the organism the characteristics of the father exclusively or those of the mother. Mixture results in a mixed or simultaneous representation of the father and of the mother on some or all of the parts of the organism. Its extreme is fusion of characteristics. Combination results in the substitution of a new characteristic in the place of any representative in a part or over the whole of the organism. This new characteristic results from the interaction of the two antagonistic ones just as a chemical combination often differs wholly from the elements which have been united in its manufacture.
Darwin 1876, Chapter XV) seems to recognize only two classes of inherit ance, Viz., one in which characteristics blend and one in which they refuse to blend. Of the latter class, however, there are two cases; either the hybrid receives all its characters from one of its parents only, or the hybrid receives part of its characters from one parent, the rest from the other.
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Inheritance in Poultry (Classic Reprint)
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Paperback. Zustand: New. Print on Demand. Embark on a fascinating exploration of inheritance and variation in the avian world with this groundbreaking study. Delving into the intricate mechanisms of heredity, the author meticulously documents the outcomes of meticulously designed breeding experiments involving diverse chicken breeds. This book stands as a pivotal contribution to the burgeoning field of genetics during the early 20th century. It offers invaluable insights into the fundamental principles of inheritance, predating the widespread recognition of Mendel's groundbreaking work. The author meticulously examines the transmission of traits across generations, shedding light on concepts such as dominance, recessiveness, and the interplay of genes in shaping an organism's characteristics. Through detailed observations and analysis of various physical attributes in chickens, including comb types, plumage colors, and even the presence of extra toes, the author unravels the complexities of how traits are passed down and expressed in offspring. The book challenges prevailing notions about blending inheritance, instead highlighting the particulate nature of genes and their role in producing distinct and predictable patterns of inheritance. Ultimately, this book's enduring value lies in its contribution to our understanding of the fundamental principles governing inheritance, offering a glimpse into the mechanisms that shape the remarkable diversity of life on Earth. This book is a reproduction of an important historical work, digitally reconstructed using state-of-the-art technology to preserve the original format. In rare cases, an imperfection in the original, such as a blemish or missing page, may be replicated in the book. print-on-demand item. Bestandsnummer des Verkäufers 9781332057009_0
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Inheritance in Poultry Classic Reprint
Anbieter: PBShop.store US, Wood Dale, IL, USA
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PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781332057009
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Inheritance in Poultry Classic Reprint
Anbieter: PBShop.store UK, Fairford, GLOS, Vereinigtes Königreich
Verkäuferbewertung 5 von 5 Sternen
PAP. Zustand: New. New Book. Shipped from UK. Established seller since 2000. Bestandsnummer des Verkäufers LW-9781332057009
Anzahl: 15 verfügbar