Differentiation Among Chromosomes
نویسندگان
چکیده
منابع مشابه
I-18: The Role of Sex Chromosomes in Female Germ Cell Differentiation
Background When gonadal sex reversal occurs in mammalian species, the resultant XX males and XY females become infertile or subfertile, suggesting critical roles of sex chromosomes in germ cell differentiation. The objective of our study is to clarify the mechanism of infertility in the B6.YTIR (XY) sex-reversed female mouse, which can be attributed to a failure in the second meiotic division i...
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High-molecular-weight deoxyribonucleic acid (DNA) of Saccharomyces carlsbergensis has been fractionated by sucrose density gradient centrifugation. The main DNA fraction has an average molecular weight of about 500 x 106. A major fraction of the DNA molecules containing sequences homologous to ribosomal ribonucleic acid (RNA) sediments as material of this molecular weight. The remainder sedimen...
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In order to learn more about the role of sex chromosome-dependent gene products in gonadogenesis, changes in protein patterns were studied during gonadal development. Two-dimensional gel electrophoresis analysis revealed specific proteins in both sexes at all developmental stages. Evidently the gonads are not indifferent by biochemical criteria at any developmental stage and express several spe...
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In maize root-tip metaphase preparations, all distances between two chromosomes were measured in 50 cells from each of seven stocks and in 30 from one stock; four were arrested with cold, two with 8-hydroxyquinoline, one with colchicine and one with monobromonaphthalene Standardized, affinity-distance values were calculated for all pairs of homologues and pairs of nonhomologues from each prepar...
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6 Litman, R. M., and A. B. Pardee, Nature, 178, 529 (1957). 7 Dunn, D. B., and J. D. Smith, Nature, 174, 305 (1954). 8 Benzer, S., these PROCEEDINGS, 41, 344 (1955). 9 Benzer, S., and E. Freese, these PROCEEDINGS, 44, 112 (1958). 10 Freese, E., these PROCEEDINGS, 45, 622 (1959). 11 S6chaud, J., and E. Kellenberger, Ann. Inst. Pasteur, 90, 102 (1956). 12 Garen, A., personal communication. 13 Uch...
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ژورنال
عنوان ژورنال: Botanical Gazette
سال: 1910
ISSN: 0006-8071
DOI: 10.1086/330283