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10.1002/dvg.1020010405.abs The plant hormone abscisic acid (ABA) is believed to play a role in the onset of developmental arrest in seeds. Embryos of the viviparous mutants of Zea mays do not undergo arrest but germinate directly on the ear. This study investigates the possibility that the...
10.1002/dvg.1020010408.abs Three mutations affecting spore maturation in the asexual fruiting body of Dictyostelium discoideum are assigned to a new locus, sprJ, on linkage group IV. Strains carrying mutations at the sprJ locus do not form mature spores, yet the cell patterning (spore, stalk and...
10.1002/dvg.1020010406.abs Tobacco (Nicotiana tabacum) and soybean (Glycine max) tissue culture cells were exposed to a heat shock and protein synthesis studied by SDS‐polyacrylamide gel electrophoresis after labeling with radioactive amino acids. A new pattern of protein synthesis is observed...
10.1002/dvg.1020010403.abs Drosophila virilis stocks differing in reaction to high temperature (32°C) were studied. The sizes of the larval salivary glands, ring gland, and imaginal discs of the heat‐sensitive stock 147, whose pupal (p) esterase was activated at 32°C, were found to be...
10.1002/dvg.1020010409.abs Twenty‐eight Bam H 1 restriction fragments were isolated from normal mitochondrial DNA of maize by recombinant DNA techniques to investigate the organization of the mitochondrial genome. Each cloned fragment was tested by molecular hybridization against a Bam digest...
10.1002/dvg.1020010404.abs The developmental program of alcohol dehydrogenase (ADH) activity in the scutellum of maize strain R6‐67 is different from that of W64A. The level of scutellar ADH activity in R6‐67 remains relatively high during the course of early sporophytic development as...
10.1002/dvg.1020010402.abs The Mexican axolotl (Ambystoma mexicanum) provides a well‐defined set of color genes which are useful for various types of analyses. These include the a (albino), m (melanoid), ax (axanthic), and d (white) genes. In addition, various combinations of these genes and a...
10.1002/dvg.1020010407.abs The hypothesis that PGK‐B, like LDH‐C4, is restricted to spermatogenic cells was explored by examining isozyme patterns in testes from mice depleted of germinal cells by surgical cryptorchism. In experimentally cryptorchized C57BL/10Sn males, decline in PGK‐B...
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