. A cytological study of haploid Crepis capillaris plants. Karyokinesis; Crepis. Fig. 7. Haploid Crepis capillaris. a, anaphase with eight single and two partly divided chromosomes; b, early telophase with twelve chromosomes. typical dividing heterotypic univalents (cf. fig. 13c). In one slide, too, a few cells with three normal bivalents (fig. 6c) were seen. These probably arose from diploid cells in the lineage of the PMC's and normal meiotic behavior would presumably ensue. These two pro- cesses would be expected to give rise to gametes of normal chromo- some constitution. Several cells wer
. A cytological study of haploid Crepis capillaris plants. Karyokinesis; Crepis. Fig. 7. Haploid Crepis capillaris. a, anaphase with eight single and two partly divided chromosomes; b, early telophase with twelve chromosomes. typical dividing heterotypic univalents (cf. fig. 13c). In one slide, too, a few cells with three normal bivalents (fig. 6c) were seen. These probably arose from diploid cells in the lineage of the PMC's and normal meiotic behavior would presumably ensue. These two pro- cesses would be expected to give rise to gametes of normal chromo- some constitution. Several cells were observed with more than six chromosomes. One such is shown in figure la, where eight more or less spherical and two elongated constricted chromosomes are to be seen. Most of the chro- mosomes are in pairs and have evidently just finished dividing, and the two large ones are undergoing division. Counting the two divid-. 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 Hollingshead, Lillian, 1900-. Berkeley, Calif. , University of California press
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