The present paper deals with eight sex-linked mutant characters that have arisen in my cultures of Drosophila virilis Sturtevant.l The eight characters are as follows: Yellow, body color. Magenta, eye color. Glazed, eye surface (figure 5). Forked, bristles on the thorax (figure 2). Vesiculated, wings. Rugose, eye surface (figure 4). Frayed, bands on the abdomen (figures 3 and 6). Hairy, eye sur...

The rugose colony variant of Vibrio cholerae O1, biotype El Tor, is shown to produce an exopolysaccharide, EPSETr, that confers chlorine resistance and biofilm-forming capacity. EPSETr production requires a chromosomal locus, vps, that contains sequences homologous to carbohydrate biosynthesis genes of other bacterial species. Mutations within this locus yield chlorine-sensitive, smooth colony ...

We herein present an unusual case of 14-year-old boy with complete diphallus and bifid scrotum. He was not aware of his extragenital abnormality until he was examined by a surgeon before circumsion. During surgery, the hypoplastic penis was resected and a single scrotum was constructed by removing the band of skin separating the compartments. The rugose skin was then joined, giving scrotal cont...

A new species of Heredius Marsh, 2002 is described from Brazil. H. flavus n. sp. differs from the other known Heredius species by its yellow mesosoma and metasoma, acinose-carinate face, acinose temple, malar space length about 0.56 times eye height, ocello-ocular distance about 4.0 times diameter of the lateral ocellus; acinose-rugose mesoscutal lobes, sternaulus finely scrobiculate and almost...

An extracellular exopolysaccharide (slime) is produced by Vibrio cholerae O139 MO10 in response to nutrient starvation. The presence of this slime layer on the cell surface and its subsequent release have been shown to be associated with biofilm formation and the change from a normal smooth colony morphology to a rugose one. An immunoelectron microscopic examination demonstrated that there is a...

In this work, morphological and anatomical features of seeds 15 Alyssum taxa (A. caricum, A. davisianum, filiforme, haussknechtii, murale subsp. var. murale, simplex, sibiricum, desertorum, hirsutum hirsutum, minutum, strictum, strigosum strigosum, szowitsianum, dasycarpum linifolium linifolium) from Turkey were examined with the cluster analysis, systematic importance these characteristics was...

In Vibrio cholerae, the second messenger 3',5'-cyclic diguanylic acid (c-di-GMP) regulates several cellular processes, such as formation of corrugated colony morphology, biofilm formation, motility, and virulence factor production. Both synthesis and degradation of c-di-GMP in the cell are modulated by proteins containing GGDEF and/or EAL domains, which function as a diguanylate cyclase and a p...