ScienceGay gene: research vs. ethicsTo play this audio please enable JavaScript, and consider upgrading to a web browser that supports HTML5 videoScienceLynsey Melling / Ashley Byrne05/05/2014May 5, 2014US researchers say they have found evidence for what they believe to be a genetic disposition towards homosexuality by studying chromosomal similarities in gay brothers. But some say the search for a "cause" is a prelude to a search for a "cure."https://p.dw.com/p/1BuBSAdvertisement Report: Lyndsey Melling