background: chromosome abnormality (ca) including sex chromosomes abnormality (scas) is one of the most important causes of disordered sexual development and infertility. scas formed by numerical or structural alteration in x and y chromosomes, are the most frequently ca encountered at both prenatal diagnosis and at birth. objective: this study describes cytogenetic findings of cases suspected ...

BACKGROUND Chromosome abnormality (CA) including Sex chromosomes abnormality (SCAs) is one of the most important causes of disordered sexual development and infertility. SCAs formed by numerical or structural alteration in X and Y chromosomes, are the most frequently CA encountered at both prenatal diagnosis and at birth. OBJECTIVE This study describes cytogenetic findings of cases suspected ...

This article focuses on the study of furniture industry in former parish Valbom (Gondomar), 1860-1911, based survey and analysis records. The experienced a significant development this period, covering large number workers related to wood (carvers, carpenters, turners, etc.). registers are fundamental source for knowledge evolution activity. aim is demonstrate importance understanding genesis g...

Many ant species use branching networks of pheromone trails for orientation between nest and resources [1–3]. Ants on trails make adaptive U-turns for correcting their course using visual cues [4,5] or trail geometry information [2]. However, the role of seemingly non-corrective U-turns on trails is poorly understood. We found that a minority of ants consistently make frequent and seemingly ina...

*Department of Molecular, Cellular and Developmental Biology, The University of Michigan, Ann Arbor, MI 48109; Department of Ecology and Evolutionary Biology, The University of Michigan, Ann Arbor, MI 48109; Department of Zoology, University of Oklahoma, Norman, OK 73019; Conte Anadromous Fish Research Center, USGS, Turners Falls; Department of Biology, University of Massachusetts, Amherst; kDe...