I get your point, read this article, it may be of interest to you.

"January 28th, 2008 Scientists are reporting evidence that intact, double-stranded DNA has the “amazing” ability to recognize similarities in other DNA strands from a distance. And then like friends with similar interests, the bits of genetic material hangout or congregate together. The recognition — of similar sequences in DNA’s chemical subunits — occurs in a way once regarded as impossible, the researchers suggest in a study scheduled for the Jan. 31 issue of ACS’ Journal of Physical Chemistry B. "

Read more:
http://www.physorg.com/news120735315.html

Salam