Yes, though probably not quite like Harry Potter's. There have already been some successful, very small scale, experiments using materials that effectively conduct light around an object, thus making it effectively invisible. Scaling up into a real-world loak might take a while.

check this out:  http://www.last-word.com/content_handling/show_tree/tree_id/2707.html

if u were invisible u'd b blind too! in order to see, your retina has to absorb some light. also, if your eyeball were to let light pass through it, your retina would b useless, like exposing a film to light without a lens - light from all around you hits every spot on your retina so you would prob only see a white blur...

a possible solution is a cloak which bends the light around itself, or a chameleon type of cloak which changes its appearance relative to the viewer based on what is directly behind it (a bit of a technological feat, even if such technology existed) with a tiny hole to see through - so small that it would not be noticeable unless you were really close up to it. or a camera in the hole and a screen inside the cloak...

It may be possible as an optical illusion, but to be completely invisible would mean to break the particles of your body so small you are basically, well, invisible.

As far as I know. Cloak is quite difficult to make. But an invisible cylinder could be possible by lining up glass around a cylinder at their critical angles. This makes the light "flow" around the cylinder without being stopped by any opaque object.

But you'll have to make sure to cut out two holes to see what's outside. But then again, people would see a floating pair of eyes watching at them.

So there, no animal genes necessary to make us invisible.