. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RECIPROCAL AXnkOCKXKTIC FROG HYP-KIDS (J5 tion. From the beginning of gastrulation their development is retarded, abnormal and highly variable. The dorsal lip may remain as a crescent and a small neural plate may appear and two small tailbuds may project above the large yolk plug (Fig. 11). These embryos differentiate no further, though they may survive until their controls (pal) pal are in stage 18 and pal pip and pal pal in stage 19. In some embryos a large yolk mass and short anterior projection are present (Fig. 12a). A
. The Biological bulletin. Biology; Zoology; Biology; Marine Biology. RECIPROCAL AXnkOCKXKTIC FROG HYP-KIDS (J5 tion. From the beginning of gastrulation their development is retarded, abnormal and highly variable. The dorsal lip may remain as a crescent and a small neural plate may appear and two small tailbuds may project above the large yolk plug (Fig. 11). These embryos differentiate no further, though they may survive until their controls (pal) pal are in stage 18 and pal pip and pal pal in stage 19. In some embryos a large yolk mass and short anterior projection are present (Fig. 12a). A few embryos formed dorsal and lateral lips of the blastopore, although no ventral lip was present. In these embryos invagination and overgrowth may occur to such an extent that only a tiny yolk plug is left. Low neural folds may form and close (Fig. 12b) and an anterior projection may develop upon which no morpho- logical head structures are discernible (Figs. 12c and 12d). The percentage of. FIGURES 9a, 9b, lOa and lOb. Androgenetic palustris embryos. FIGURE 11. Two (pal) pip No. 149 embryos showing abnormal gastrulation. FIGURES 12a and 12b. Two (pal) pip No. 184 embryos, b showing neural folds. FIGURES 12c and 12d. Two (pal) pip No. 273 embryos, showing anterior projection and short tail. FIGURES 13a and 13b. Two (pal) pip No. 184 embryos, showing maximum differentiation reached by any (pal) pip 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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