. Cytology, with special reference to the metazoan nucleus. Cells. Spermatocyte I. Spermatocyte II. Spermatid. (3) Various forms of the X and Y Chromosomes A frequent feature of the X chromosome is that it is compound,. *«. xm '* ??V. ••••• (V s *a: H Fig. 48. The chromosomes of Gelastocoris. (Payne, , 1909.) A, 9 diploid group, 30 + 2X4 = 38 chromosomes; B, $ diploid group, 30 + X4+Y = 35 chromosomes; C, metaphase I5 + X4+Y = 20 chromosomes; D, metaphase II., & ; the sex chromosomes are in the middle of the ring, the four components of the X chromo- some in a group opposed to the sing
. Cytology, with special reference to the metazoan nucleus. Cells. Spermatocyte I. Spermatocyte II. Spermatid. (3) Various forms of the X and Y Chromosomes A frequent feature of the X chromosome is that it is compound,. *«. xm '* ??V. ••••• (V s *a: H Fig. 48. The chromosomes of Gelastocoris. (Payne, , 1909.) A, 9 diploid group, 30 + 2X4 = 38 chromosomes; B, $ diploid group, 30 + X4+Y = 35 chromosomes; C, metaphase I5 + X4+Y = 20 chromosomes; D, metaphase II., & ; the sex chromosomes are in the middle of the ring, the four components of the X chromo- some in a group opposed to the single Y chromosome which is partly underneath them; E, metaphase II., S; F, anaphase II., <J ; G, H, polar views of anaphase II., £—G with the Y chromosome, H with the X 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 Agar, W. E. (Wilfred Eade), 1882-1951. London, Macmillan and Co. , limited
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectcells, bookyear1920
