<p>Humans and fruit flies have similar Hox genes, which are master regulators of embryonic development</p><p>September 12, 2013</p><p>Hox genes are the master regulators of embryonic development for all animals, including humans, flies and worms. They decide what body parts go where. Not surprisingly, if something goes wrong with these genes, the results can be disastrous.</p><p>In Drosophila, the fruit fly, a Hox mutation can produce profound changes--an extra pair of wings, for example, or a set of legs, instead of antennae, growing from the fly's head.</p><p><a href="http://www.nsf.gov/discoveries/disc_summ.jsp?cntn_id=129101&org=NSF&from=news">Keep reading...</a></p>