Hello, Iragapaula! Welcome to Wikipedia! Thank you for your contributions. You may benefit from following some of the links below, which will help you get the most out of Wikipedia. If you have any questions you can ask me on my talk page, or place {{helpme}} on your talk page and ask your question there. Please remember to sign your name on talk pages by clicking or by typing four tildes "~~~~"; this will automatically produce your name and the date. If you are already excited about Wikipedia, you might want to consider being "adopted" by a more experienced editor or joining a WikiProject to collaborate with others in creating and improving articles of your interest. Click here for a directory of all the WikiProjects. Finally, please do your best to always fill in the edit summary field when making edits to pages. Happy editing! Vanamonde93 (talk) 20:39, 20 May 2016 (UTC)[reply]
Was to similar to "Repetitive sequences are often associated with silencing and a variety of transgene constructs can be designed to study the effects of different types of repeats when they are positioned 5′ or 3′ to transgenes. Possibilities include testing the effect of the same repeat on weak or strong promoters, such as the nopaline synthase (NOSpro) and 35S promoter (35Spro), respectively, and various reporter genes, such as β-glucuronidase (gus) and neomycinphosphotransferase (npII)" http://www.ufv.br/dbv/pgfvg/bve684/htms/pdfs_revisao/expressaogenica/position%20silencing.pdf
