It has been very important to understand thoroughly potential ecological risk of genetically modified crops (GMCs) with the recent increase of commercial use of GMCs. The likelihood of transgenes dispersal from GMCs to the related wild species, the tolerance of insect to insect\|resistant GMCs and the potential impacts of GMCs on biodiversity had been extensively investigated. This article summarized several possible characteristics of the transfer of foreign genes and their expression products in GMCs: (i)...