HE distributive pairing model of meiosis for the female of Drosophila melanoTgastcr (R. F. GRELL 1962a) postulates a chronological series of events which includes exchange pairing, exchange, distributive pairing, and segregation, in the order given. The model was dictated by genetic data, derived from studies of nonhomologous pairing, which showed that the frequency with which nonhomo!oguos pai...

The effects of a female-specific meiotic mutation, altered disjunction (old: 361), are described. Although old females show normal levels of meiotic exchange, sexand 4th-chromosome nondisjunction occurs at an elevated level. A large proportion of the nondisjunction events is the result of nonhomologous disjunction of the sex and 4th chromosomes. These nonhomologous disjunction events, and proba...

HE segregational behavior of Drosophila chromosomes in the first meiotic Tdivision of the oocyte is quite different from that expected from the classical picture of the independent assortment of nonhomologous chromosomes and the regular segregation of homologous chromosomes. Under appropriate circumstances, nonhomologous chromosomes may segregate very regularly to opposite poles of the spindle ...

most of this is by German doctors idealizing Paracelsus as a forerunner of their own practices. Heinz Schott takes this further by arguing that the occult and religious content of Paracelsus's writings is reflected in modern psychosomatic medicine. By contrast, Herbert Breger focuses on leading "Paracelsians" of the seventeenth century and suggests that their willingness to identify with a Para...

[1] MM5-based regional climate model (CMM5) simulations of the diurnal cycle of U.S. summer precipitation are found to be sensitive to the choice of cumulus parameterization schemes, whose skills are highly regime selective. The Grell scheme realistically simulates the nocturnal precipitation maxima and their associated eastward propagation of convective systems over the Great Plains where the ...

We sequenced the 18S ribosomal RNA gene of seven isolates of the enigmatic marine amoeboflagellate Reticulamoeba Grell, which resolved into four genetically distinct Reticulamoeba lineages, two of which correspond to R. gemmipara Grell and R. minor Grell, another with a relatively large cell body forming lacunae, and another that has similarities to both R. minor and R. gemmipara but with a gre...

This paper is aimed at performing a group of experiments to evaluate the sensitivity cumulus and microphysics schemes, as represented in numerical simulations Weather Research Forecasting (WRF) model. The convective schemes Kain-Fritsch (KF), Betts-Miller-Janjic (BMJ), Grell-Devenyi (GD), Grell-Freita (GF), Grell 3D (G3D), Tiedtke New (NT) were tested association with Kessler, Purdue Lin, WSM3,...