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  1. No Access

    Article

    Are terminal chiasmata in male Schistocerca gregaria produced by telomere stickiness or by crossover processes?

    L. T. Douglas, D. F. Cupedo, R. M. Douglas in Genetica (1978)

  2. No Access

    Article

    Book reviews

    L. T. Douglas, R. Piechocki, E. Hofmann, K. Esser in Theoretical and Applied Genetics (1977)

  3. No Access

    Article

    Patterned disjunction in Drosophila melanogaster. I. Assortment of SPA pol /+ and X, Y in the stock N1

    N1 (= Nijmegen 1) ♂♂ D. melanogaster heterozygous for sparkling poliert (4) (= pol, here) were backcrossed as single pairs. When ♂♂ were not selected for departure from 1/1, pol/pol +, many exceptional ratios wer...

    L. T. Douglas, M. E. van Meekeren in Genetica (1972)

  4. No Access

    Article

    Meiosis VII: “Detorsive bending” as a basis for geometric shapes of late prophase bivalents

    A new model depending on mechanical properties of chromosomes is adduced as a basis for diplotene opening-out and for curvature occurring in grasshopper bivalents, during and subsequent to diplotene. Condition...

    L. T. Douglas in Genetica (1970)

  5. No Access

    Article

    Meiosis VI: A reinterpretation of tritium thymidine labelling of meiotic chromosomes, supporting the chiasmatype hypothesis

    Re-examination of data relating chiasmata per bivalent to tritium thymidine switch points per chromatid in male grasshoppers suggests that they are consistent with the chiasmatype hypothesis: that the number o...

    L. T. Douglas, H. W. Kroes in Genetica (1969)

  6. No Access

    Article

    A stock ofDrosophila melanogaster evidently showing drive and quasi-linkage in females

    Preliminary experiments on a laboratory stock ofDrosophila melanogaster are described, which lead to the conclusion that there is in this stock “meioti-drive” and quasi-linkage in females.

    L. T. Douglas, S. J. Geerts, Noordje Oomen in Genetica (1968)

  7. No Access

    Article

    Meiosis IV: Segregation from interchange multivalents as a Markov process

    A new model is adduced in explanation of known segregation ratios from quadrivalents and related multivalents. A Markov process consisting of the following three steps is proposed: (A) geometric ordering of ce...

    L. T. Douglas in Genetica (1968)

  8. No Access

    Article

    Meiosis III: The elastica, and markov proceses as models for non-random segregation from associated non-homologues inDrosophila

    Grell's (1964) “non-competitive” data describing segregation of markers on two non-homologous, non-crossover chromosomes inDrosophila melanogaster, called Dp and 4, are explained on the basis of the “elastica” b...

    L. T. Douglas in Genetica (1968)

  9. No Access

    Article

    Meiosis V: Matric and path coefficient solutions of tri- and quadrivalents

    Possible classes of spatial ordering between chromosomal components of multivalents and their motion with respect to each other are deduced on the basis of the propositions: (A) that the proximity of centromer...

    L. T. Douglas in Genetica (1968)

  10. No Access

    Article

    Meiosis, I: Association of non-homologous bivalents during spermatogenesis in white mice

    In Feulgen sqaushes from control and EDTA pretreated seminiferous tubules of white mice, association of non-homologous chromosomes has been observed in pachytene, diplotene and in secondary spermatocyte nuclei...

    L. T. Douglas in Genetica (1966)

  11. No Access

    Article

    Meiosis, II: A modified affinity model in mice

    In male mice, observations on MI clustering of nonhomologues in 4-armed tri-bivalent groups considered together with estimates of chiasma frequency in the same clusters, has suggested a modification of theWallce ...

    L. T. Douglas, S. J. Geerts in Genetica (1966)

  12. No Access

    Article

    Evidence for tandem arrangement of chromosomal elements in spermatid nuclei of the chinese hamster

    Incubation of living seminiferous tubules of the chinese hamster,Cricetulus barabensis, in EDTA-containing hypotonic salt solutions and subsequent Feulgen squashing gives preparations with tandemly-aligned chromo...

    L. T. Douglas in Genetica (1965)