. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. THE MATURATION OF THE OVUM 20 human ova, and, indeed, among mammals only with any approach to completeness in comparatively few forms (rat, mouse, guinea- pig, bat and cat); but they have been observed in so many other forms, both vertebrate and invertebrate, and present in all cases so. Fig. 15.—Diagram Illustrating the Reduction of~the Chromosomes during the Maturation of the Ovum. 0, Ovum; ocl, oocyte of the first generation; oc2, oocyte of the second generation; p, polar globule. much uni
. The development of the human body : a manual of human embryology. Embryology; Embryo, Non-Mammalian. THE MATURATION OF THE OVUM 20 human ova, and, indeed, among mammals only with any approach to completeness in comparatively few forms (rat, mouse, guinea- pig, bat and cat); but they have been observed in so many other forms, both vertebrate and invertebrate, and present in all cases so. Fig. 15.—Diagram Illustrating the Reduction of~the Chromosomes during the Maturation of the Ovum. 0, Ovum; ocl, oocyte of the first generation; oc2, oocyte of the second generation; p, polar globule. much uniformity in their general features, that there can be little question as to their occurrence in the human ovum. In typical cases the ovum (the primary oocyte) undergoes a division in the prophases of which the chromatin aggregates to form half as many tetrads as there are chromosomes in the somatic cells. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original McMurrich, J. Playfair (James Playfair), 1859-1939. Philadelphia : P. Blakiston's son & co.
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Keywords: ., bookautho, bookcentury1900, bookdecade1910, booksubjectembryology
