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Conditional gene regulation in Drosophila through binary expression systems like the LexA-LexAop system provides a superb tool for investigating gene and tissue function. To increase the availability of defined LexA enhancer trap insertions, we present molecular, genetic and tissue expression studies of 301 novel Stan-X LexA enhancer traps derived from mobilization of the index SX4 line. This includes insertions into distinct loci on the X, II and III chromosomes that were not previously associated with enhancer traps or targeted LexA constructs, an insertion into ptc, and seventeen insertions into natural transposons. A subset of enhancer traps was expressed in CNS neurons known to produce and secrete insulin, an essential regulator of growth, development and metabolism. Fly lines described here were generated and characterized through studies by students and teachers in an international network of genetics classes at public, independent high schools, and universities serving a diversity of students, including those underrepresented in science. Thus, a unique partnership between secondary schools and university-based programs has produced and characterized novel resources in Drosophila, establishing instructional paradigms devoted to unscripted experimental science.

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The objective of this work is to examine the influence of formal institutions on the level of informal entrepreneurial activity in Latin American countries. We use a panel dataset for 18 countries during the 2004–2017 periods. This dataset has not been widely used for longitudinal research by academics in the field of entrepreneurship in developing countries. Using the percentage of the adult population identified as self-employed as a proxy for informal entrepreneurial activity, our results suggest that informal entrepreneurial activity is lower in Latin American countries that have stronger property rights and lighter business regulation. However, countries with more flexible labor regulation show higher informal entrepreneurial activity. Therefore, we believe there is margin for policy intervention to reduce informal entrepreneurial activities in Latin America.