This report examines the current U.S. regulatory system for GE crops, compares it with those of major trading partners, and considers the effects it has on agricultural biotechnology.

This brief report outlines the main economic effects of the observed asynchrony in approvals for biotech-improved crops from regulatory systems in countries that are major global commodity exporters and importers.

This CAST Commentary provides an up-to-date evaluation of the use of biotechnology in crop production. The concise, fact-based document addresses the science behind the issues. Chair: Bruce Chassy, University of Illinois, Urbana. QTA2005-2, 6 pp., October 2005.

Las variedades transgénicas de cultivos han sido consumidas por hombres y animales en muchos países, por lo que se dispone de una gran cantidad de datos y observaciones con el fin de juzgar su seguridad y utilidad.

La presencia adventicia se refiere a la mezcla no intencional de cantidades mínimas de un tipo de semilla o producto, con otro. Aunque este proceso puede ocurrir con los cultivos obtenidos en forma tradicional, la presencia adventicia normalmente contempla las semillas y productos de ingeniería genética en un material que no la ha experimentado.

Adventitious presence refers to the unintended commingling of trace amounts of one type of seed, or product, with another. Although this process can occur with conventionally bred crops, adventitious presence is more commonly regarded as the presence of genetically engineered (GE) seed and product in non-GE material.