. Analysis of development. Embryology; Embryology. The Role of Nucleus and Cytoplasm 139 either spontaneously or in various experi- ments (polyspermy, parthenogenesis, cold or heat treatment of eggs), which exhibit two or sometimes three different chromosome numbers in different regions which may vary in extent from a few cells to one-half of the body. Most frequent are haploid/diploid and haploid/triploid embryos, but several other combinations have been observed. The haploid side of a mosaic generally shows a much more normal development than may be seen in completely haploid animals (compar
. Analysis of development. Embryology; Embryology. The Role of Nucleus and Cytoplasm 139 either spontaneously or in various experi- ments (polyspermy, parthenogenesis, cold or heat treatment of eggs), which exhibit two or sometimes three different chromosome numbers in different regions which may vary in extent from a few cells to one-half of the body. Most frequent are haploid/diploid and haploid/triploid embryos, but several other combinations have been observed. The haploid side of a mosaic generally shows a much more normal development than may be seen in completely haploid animals (compare Fig. 33a with Fig. 29c). Since mosaics possess a normal circulation, with both hapoid and diploid blood cells cir- culating through the haploid organs, the bet- ter performance of the latter may possibly be explained on this basis. However, parabio-. 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 Willier, Benjamin H. (Benjamin Harrison), b. 1890. Philadelphia, Saunders
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Keywords: ., bookcentury1900, bookpublisherphiladelphi, booksubjectembryology
