. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. $ £ V. r«» n^f£/ *~P e *QsS FIG. 9. Anasa tristis. Chromosome-groups of embryonic cells, 22-chromo- some type, all from the same embryo. Accordingly, one of the large chromosomes of the male groups must be the unpaired idiochromosome and two of the large chro- mosomes of the female groups, the paired idiochromosomes. The m-chromosomes appear as constant elements in both groups and are usually more,elongated than in the germ-cells, a feature which is common to all I he chromosomes. Apart from the largest and smallest elements
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. $ £ V. r«» n^f£/ *~P e *QsS FIG. 9. Anasa tristis. Chromosome-groups of embryonic cells, 22-chromo- some type, all from the same embryo. Accordingly, one of the large chromosomes of the male groups must be the unpaired idiochromosome and two of the large chro- mosomes of the female groups, the paired idiochromosomes. The m-chromosomes appear as constant elements in both groups and are usually more,elongated than in the germ-cells, a feature which is common to all I he chromosomes. Apart from the largest and smallest elements, this elongated condition makes it impossible to pair off the remaining chromosomes with any degree of certain i \ . 12A11 the figures were drawn with camera lucida, Zeiss apochromat. 2 nun., compens. oc. 12. With the exception of Plates I. and II., they were again with the camera and subsequently reduced in reproduction one-half, giving a final magnification of 2,650 diameters. The magnification of Plates I. anil is diameters. Achromatic structures, except those of Plates I. and havr Inn. represented 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 Marine Biological Laboratory (Woods Hole, Mass. ); Marine Biological Laboratory (Woods Hole, Mass. ). Annual report 1907/08-1952; Lillie, Frank Rattray, 1870-1947; Moore, Carl Richard, 1892-; Redfield, Alfred Clarence, 1890-1983. Woods Hole, Mass. : Marine Biological Laboratory
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Keywords: ., bookauthorlilliefrankrat, booksubjectbiology, booksubjectzoology
