WordPress Genesis Add About the Author, Author Biography http://www.ohdesigner.com/add-about-the-author-wordpress-genesis/

functions.php

function add_author_bio() {
if ( !is_singular( array( 'post', 'page' ) ))  return;
{ ?>
<div class="postauthor">
<?php echo get_avatar( get_the_author_id() , 120 ); ?>
<h4>About the Author</h4>
<p><?php the_author_description(); ?></p>
</div>
<?php }
}
add_action('genesis_entry_footer', 'add_author_bio', 2);