Life History Studies On Montana Trematodes volume Illinois Biological Monograph
Life History Studies On Montana Trematodes volume Illinois Biological Monograph
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In our eReader you can find the full English version of the book. Read Life History Studies On Montana Trematodes volume Illinois Biological Monograph 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 Life History Studies On Montana Trematodes volume Illinois Biological Monograph
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Ssinitzin (1905, Figs. 62, 67, 74) has found it in the three xiphidiocercariae, Cercaria gibba de Fil. , C. Prima, and C. Secunda. The constant development of this organ in the several groups described in this paper shows that the canal originally had an important place in the genital processes of the Digenea.
The pronounced difference in structure between parthenogenetic ova which develop into rediae and those which develop into cercariae has been discussed (p. 18). This difference has been fo...und to bear no relation to the phenomenon of maturation, since the chromosome count in the mature cells is the same, whether redia or cercaria is to be produced. In fact, it seems probable that the differentiation occurs before maturation. It is significant that the ova which develop into redia are comparatively simple while the ova which develop into cercariae are extremely complex. In this connection it has been observed that embryos developing from germ-balls produced from ova free in the body cavity produce daughter rediae.
What to read after Life History Studies On Montana Trematodes volume Illinois Biological Monograph?
You can find similar books in the "Read Also" column, or choose other free books by Ernest Carroll Faust to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Ssinitzin (1905, Figs. 62, 67, 74) has found it in the three xiphidiocercariae, Cercaria gibba de Fil. , C. Prima, and C. Secunda. The constant development of this organ in the several groups described in this paper shows that the canal originally had an important place in the genital processes of the Digenea.
The pronounced difference in structure between parthenogenetic ova which develop into rediae and those which develop into cercariae has been discussed (p. 18). This difference has been fo...und to bear no relation to the phenomenon of maturation, since the chromosome count in the mature cells is the same, whether redia or cercaria is to be produced. In fact, it seems probable that the differentiation occurs before maturation. It is significant that the ova which develop into redia are comparatively simple while the ova which develop into cercariae are extremely complex. In this connection it has been observed that embryos developing from germ-balls produced from ova free in the body cavity produce daughter rediae.
What to read after Life History Studies On Montana Trematodes volume Illinois Biological Monograph?
You can find similar books in the "Read Also" column, or choose other free books by Ernest Carroll Faust to read onlineMoreLess
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