Variation of Somatic Chromosome Number in Clarkia Elegans PDF Download
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Author: Hsu-chuan Tuan
Publisher:
ISBN:
Category : Clarkia
Languages : en
Pages : 102
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Book Description
Author: Hsu-chuan Tuan
Publisher:
ISBN:
Category : Clarkia
Languages : en
Pages : 102
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Book Description
Author: Hsu-Chuan Tuan
Publisher:
ISBN:
Category : Clarkia
Languages : en
Pages : 48
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Book Description
Author: Ludwig August Waitzinger
Publisher:
ISBN:
Category : Onagraceae
Languages : en
Pages : 528
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Book Description
Author: Bernard John
Publisher: Springer
ISBN: 9783211808818
Category : Science
Languages : en
Pages : 210
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Book Description
material can serve both autocatalytic and heterocatalytic functions. Thus not only is it unique in itB capacity for self-replication but its base sequence determines the specificity of proteins. And enzyme proteins are immediately responsible for the peripheral metabolism which enables the organism to impose its own kind of order on the raw materials it absorbs. The course of development is determined not only by the nature of the genetic material but by its over-all amount and the relative frequency of the different functional units. Differential rates of epigenetic activity matter also. In theory, therefore, differential development within or even between individuals could be determined by the differential replication of the various genetic elements or by their differential activity. And further variation could arise by the differential transmission of these elements between cells. Indeed it would appear that all these possibilities are exploited by living systems. If like is to beget like, however, any genetic change which occurs during development must be undone, or else germinal units preserved from change must be set aside. As far as is known, genetic changes, even those involving only quantity or relative amounts, are reversible to only a very limited extent so that a change once done cannot be undone. Consequently genetic changes during the development of presumptive germ-lines are either non existant or minor and confined to a small class of un aggregated deter minants.
Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 408
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Book Description
1913/15 contains reports of chancellor and treasurer; 1919/24, reports of treasurer and comptroller; 1924- reports of treasurer, comptroller, departments, committees and the publications of the faculty.
Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 1228
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Book Description
Contains annual financial report, reports of schools, departments, committees, other administrative offices, and publications of the faculty.
Author: Stanford University
Publisher:
ISBN:
Category :
Languages : en
Pages : 787
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Book Description
Contains annual financial report, reports of schools, departments, committees, other administrative offices, and publications of the faculty.
Author:
Publisher:
ISBN:
Category : Botany, Experimental
Languages : en
Pages : 308
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Book Description
Author: China Institute in America
Publisher:
ISBN:
Category : China
Languages : en
Pages : 42
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Book Description
Author: James F. Hancock
Publisher: CABI
ISBN: 1845938011
Category : Technology & Engineering
Languages : en
Pages : 255
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Book Description
The genetic variability that developed in plants during their evolution is the basic of their domestication and breeding into the crops grown today for food, fuel and other industrial uses. This third edition of Plant Evolution and the Origin of Crop Species brings the subject up-to-date, with more emphasis on crop origins. Beginning with a description of the processes of evolution in native and cultivated plants, the book reviews the origins of crop domestication and their subsequent development over time. All major crop species are discussed, including cereals, protein plants, starch crops, fruits and vegetables, from their origins to conservation of their genetic resources for future development.
