Are you looking for responsive theme for WordPress? Take a look at (in)Spyr child theme. It prides itself as the most robust Genesis child theme on the market.
(in)Spyr is built on the Genesis framework from Studiopress and includes three theme styles and six color options. This theme also showcases the following features: 3 layout options, custom background, custom menus, featured images, fixed width, mobile responsive, theme options and threaded comments.
You can learn more about this theme of view a demo of it here: (in)SPYR Theme.