Cytology With Special Reference to the Metazoan Nucleus
Cytology With Special Reference to the Metazoan Nucleus
Wilfred Eade Agar
The book Cytology With Special Reference to the Metazoan Nucleus was written by author Wilfred Eade Agar Here you can read free online of Cytology With Special Reference to the Metazoan Nucleus book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Cytology With Special Reference to the Metazoan Nucleus a good or bad book?
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VI ECHINODERM HYBRIDS 159 Strongylocentrotus chromosome is still present. In regard to these three chromosomes, therefore, there is no doubt that it is the male chromosomes that are eliminated. There are other reasons, which cannot be gone into here, for supposing that this is so in regard to all the fifteen chromosomes which are got rid of. Thus the overwhelming influence of the female parent in the formation of the pluteus skeleton is easily intelligible on the hypothesis that the idioplasm i...s contained in the nucleus, since the larval nuclei contain eighteen chromosomes from the female parent but only about three from the male. Furthermore, the pathological phenomena in the blastulae owe their origin to the same process. The ehminated paternal chromosomes do not lie altogether passive in the cytoplasm, but undergo repeated fission, forming great masses of chromatin. At the formation of the blastula these chromatin masses with surrounding cytoplasm are extruded into the blastocoele, where they form the masses mentioned above.
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