A) Somatic cells are diploid, meaning that they have two copies of the human genome. B) Somatic cells are haploid, meaning that they have one copy of the human genome. C) Sperm and egg cells are diploid, meaning that they have two copies of the human genome. D) Stem cells are haploid, meaning that they have one copy of the human genome. E) Nerve and muscle cells are haploid, but other differentiated cells are diploid.