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The Chromosome Cycle - Kern- und Zellteilung B the Chromosome Cycle (Paperback, Softcover reprint of the original 1st ed. 1969)
Loot Price: R1,513
Discovery Miles 15 130
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The Chromosome Cycle - Kern- und Zellteilung B the Chromosome Cycle (Paperback, Softcover reprint of the original 1st ed. 1969)
Series: Kern- und Zellteilung, 6 / B
Expected to ship within 10 - 15 working days
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neoessity for making it. Yet, clearly, the problem of development
is largely one of filling "the vacuum between determinant and
character" (DARLINGTON 1951). Nowadays the chromosome theory can be
presented in much greater detail and with utter confidence, but its
two main features remain the same. However, while the role of the
chromosomes in heredity and development has been appreciated for a
long time, the manner in which they perform their genetic and
epigenetic functions has become amenable to critical investigation
only in recent years. There is, therefore, still an unmistakable
tendency to think of chromosomes in terms of the discrete threads
of cell division and, in keeping with this conception, the
chromosome cycle is gen erally considered in relation to the
microscopically visible changes in morphology which occur during
the mechanically active phases of mitosis and meiosis. Chromosome
phenotype, however, changes not only during division but throughout
the cell cycle. The changes which occur during interphase are, of
course, scarcely revealed in morphological modifications of the
restless "resting" nucleus. Consequently they are less obvious and
correspondingly less amenable to investigation. This accounts for
the concentration on the countable karyotype, with its visible
properties of pairing and pycnosity, and the measurable movements
of separation and segregation.
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