INHERITANCE OF THE X CHROMOSOME IN EXCEPTIONAL MALES OF SCIARA OCELLARIS (DIPTERA)

Observations on the inheritance of sex in Sciara ocellaris (Diptera).

Errors in the Elimination of X Chromosomes in SCIARA OCELLARIS.

It was previously assumed that the X-linked recessive mutation, sepia, induced errors in X-chromosome elimination during early embryogenesis of Sciara ocellaris. The results obtained in the present analysis corroborate this assumption and permit a further classification of the type of error this mutation induces. Among 85,244 individuals analyzed, three kinds of aberrant flies were identified: ...

Role of microtubules and microtubule organizing centers on meiotic chromosome elimination in Sciara ocellaris.

Spindle formation and chromosome elimination during male meiosis in Sciara ocellaris (Diptera, Sciaridae) has been studied by immunofluorescence techniques. During meiosis I a monopolar spindle is formed from a single polar complex (centrosome-like structure). This single centrosomal structure persists during meiosis II and is responsible for the non-disjunction of the maternal X chromatids. Du...

X-Ray Induced Chromosome Rearrangements in the Females of Sciara.

Parker, G. H., "Color Changes of the Catfish Ameiurus in Relation to Neurohumors," Jour. Exp. Zool., 69, 199-223 (1934b). Parker, G. H., "Do Melanophore Nerves Show Antidromic Responses?" Jour. Gen. Physiol., 20, 851-858 (1937). Parker, G. H., "The Colour Changes in Lizards, Particularly in Phrynosoma," Jour. Exp. Biol., 15, 48-73 (1938). Parker, G. H., "On the Neurohumors of the Color Changes ...

the plain x-ray the diagnosis of the acute abdomen_

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