Science nerd greeting cards

The phrase "one for a feature and the other determining a preference for that feature" 
is the most romantic thing I have ever heard.
<p>
The full quote:
"Sexual selection, the attraction between mates that results from two genes, one for a feature and the other determining a preference for that feature, is also very important."
<a href="http://en.wikipedia.org/wiki/Sequence_evolution#Causes_of_change_in_allele_frequency">Source</a>.