can someone post those links for me to those 2 web sites that have morphs displayed and explained? I cant seem to find them at all

my questions if someone feels like taking them on are...

how do you get a morph? can it happen of 2 "normal" parents?
and what is "het" and why would that make a difference in the snake? so I'm pretty much looking for a BP biology lesson I guess

any help would be apreciated!
thanks