Yoast's WordPress SEO plugin includes breadcrumbs which require manual installation of a template tag. After installing the plugin, go to
Breadcrumbs
The tutorials in this archive provide code which enables you to modify & customize the default breadcrumbs in any Genesis child theme.
Change Breadcrumbs In Genesis
You can easily enable or disable breadcrumbs from displaying on posts, pages, archives and your home page using the Genesis > Theme