Which statement about sister chromatids is true? One sister chromatid is inherited from each parent. Sister chromatids are always in every cell. Sister chromatids are used only for reproduction. Each sister chromatid forms a lobe of a chromosome.

C is the correct answer. Sister chromatids are separated from each other during the mitosis phase of reproduction. A is incorrect - sister chromatids differ from homologous chromosomes, which are different copies of one chromosome, each inherited from a parent. As sister chromatids from part of a person's DNA, they are present in each cell.