Bountiful Harvest by J. Stephen Howard

United we stand, and divided we rot. This is the mantra of those living in the Newly United States of America in the year 2082, when imperfect DNA is no longer tolerated and genetic modification is as commonplace as changing one’s clothes. But when the creations of a geneticist draw the attention of an alien species, a boy and his band of genetically-restored misfits are all that stand in the way of the apocalypse.