Can blue eyes ever be heterozygous?

why not.lol yea the genes making your eyes blue can be composed of different alleles

You must be homozygous recessive to have blue eyes.

imagine a line passing through the center of earth that goes through both the north pole and the south pole. this imaginary line is called an axis. earth spins around its axis, just as a top spins around its spindle. this spinning movement is called earth's rotation. at the same time that the earth spins on its axis, it also orbits, or revolves around the sun. this movement is called revolution.