On Product Detail Page or on Product List Page you can get attribute (color replace with yours) drop down value using following code:
	
    <?php 
    $attr = $_product->getResource()->getAttribute('color')->getOptions(); 
    foreach ($attr as $attrColor) {
   		echo $attrColor->getValue();
        echo '<br>';
   		echo $attrColor->getLabel(); 
    } 			
    ?>