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This page should not be speedily deleted because... (your reason here) -- Akshaykatyura ( talk) 10:00, 6 October 2013 (UTC) reply

it is a proved information and here is the link http://www.ndsu.edu/pubweb/~mcclean/plsc431/prokaryo/prokaryo2.htm

This Z-gene article only has one line (identifying the product protein) which is covered in the substantial lac operon article. Better to delete as no one refers to lacZ as the Z-gene ? Article survived a previous speedy delete - now time for WP:PROD ? - Rod57 ( talk) 17:10, 14 October 2016 (UTC) reply