Sofia watched the plates swap out before her as those around her gorged themselves on gourmet dishes she'd only seen on TV.
But the Y has no sexual ' partner ' with which to swap out defective genes.
Additional upgrading possibilities like RAM expansion, more drive bays on a desktop or the ability to swap out graphics cards on a laptop.
One easy way to become more energy efficient is to swap out less efficient incandescent bulbs for compact fluorescent bulbs or CFLs.
Move things around with a click of your mouse, or swap out items to try different looks.