. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 1 d e f FIG. 6. Eggs showing irregularity of ck-avage pattern beginning with third division, after first two have proceeded as in Fig. I, b. Viewed from animal pole except in e; cleavage furrows as numbered, a, cell with all furrows of the third set horizontal, but furrows delayed in two of the blas- tomeres. b and c, egg with two furrows of third set atypical in direction; b at II : 45 , c at 12: 50 d and e, egg with two furrows of third set horizontal and the other two parallel to the second furrows in the anima
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. 1 1 d e f FIG. 6. Eggs showing irregularity of ck-avage pattern beginning with third division, after first two have proceeded as in Fig. I, b. Viewed from animal pole except in e; cleavage furrows as numbered, a, cell with all furrows of the third set horizontal, but furrows delayed in two of the blas- tomeres. b and c, egg with two furrows of third set atypical in direction; b at II : 45 , c at 12: 50 d and e, egg with two furrows of third set horizontal and the other two parallel to the second furrows in the animal hemisphere (d) but meeting the second furrows below the equator (r). /, egg with furrows marked 3 and 3' atypical in direction. larity results from the atypical direction of one or more of the cleavage furrows of the third set. In the egg shown in Fig. 6, /'. for example, the line marked 3 represents a furrow of the third set which takes a direction parallel with the second furrow, and hence does not cut off a polar micromere in the usual fashion; the third furrow around micromere A is also atypical in direction, since it curves back almost to the animal pole instead of joining the first cleavage furrow nearer the equator. In the fourth cleavage. 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
