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To compare the genetic variation among bands represented by the 540 bp size following PCR, an additional 10 strains of marijuana were chosen. There are lots of options, this tells you that weed seeds are easy to grow across a wide variety of conditions. But can you tell the difference between weed seeds before they re cultivated.  Source: [url=http://u47.org/u47forum/forum_posts.asp?TID=13553]http://u47.org/u47forum/forum_posts.asp?TID=13553[/url]