Practical Plant Biology a Course of Elementary Lectures On the General Morpholo
Practical Plant Biology a Course of Elementary Lectures On the General Morpholo
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In our eReader you can find the full English version of the book. Read Practical Plant Biology a Course of Elementary Lectures On the General Morpholo Online - link to read the book on full screen. Our eReader also allows you to upload and read Pdf, Txt, ePub and fb2 books. In the Mini eReder on the page below you can quickly view all pages of the book - Read Book Practical Plant Biology a Course of Elementary Lectures On the General Morpholo
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In suitably stained specimens it may be seen that this cleavage is the result of the division of each of the minute chromomeres of the thread. The two parallel linear series formed by this division constitute the halves of the chromosomes. These Lecture XX VI II. 253 halves part asunder and moving along their associated fibres migrate to the opposite poles. Round the poles the half chromosomes con- gregate and draw together to form a dense mass of chromatin and linin.
While the halves of the bi...sected chromosomes are moving apart, at the middle of each fibre of the achromatic spindle, a bright refringent speck appears. It is composed of a cellulose-like sub- stance called pectose. The specks of pectose together form the cell- plate. They gradually grow in size and finally coalesce to form a disc, still apparently perforated by fine filaments of protoplasm the persisting remains of the achromatic fibres. Subsequently layers of cellulose are deposited on each side of the cell-plate and are extended out from it to unite with the lateral walls of the cell, thus dividing it into two.
What to read after Practical Plant Biology a Course of Elementary Lectures On the General Morpholo?
You can find similar books in the "Read Also" column, or choose other free books by Henry Horatio Dixon to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
In suitably stained specimens it may be seen that this cleavage is the result of the division of each of the minute chromomeres of the thread. The two parallel linear series formed by this division constitute the halves of the chromosomes. These Lecture XX VI II. 253 halves part asunder and moving along their associated fibres migrate to the opposite poles. Round the poles the half chromosomes con- gregate and draw together to form a dense mass of chromatin and linin.
While the halves of the bi...sected chromosomes are moving apart, at the middle of each fibre of the achromatic spindle, a bright refringent speck appears. It is composed of a cellulose-like sub- stance called pectose. The specks of pectose together form the cell- plate. They gradually grow in size and finally coalesce to form a disc, still apparently perforated by fine filaments of protoplasm the persisting remains of the achromatic fibres. Subsequently layers of cellulose are deposited on each side of the cell-plate and are extended out from it to unite with the lateral walls of the cell, thus dividing it into two.
What to read after Practical Plant Biology a Course of Elementary Lectures On the General Morpholo?
You can find similar books in the "Read Also" column, or choose other free books by Henry Horatio Dixon to read onlineMoreLess
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