The answer to this question is option 2, chromosomes. Genes, which are the hereditary units responsible for transmitting traits from parents to offspring, are located within the chromosomes. Chromosomes are thread-like structures found in the nucleus of a cell. They carry the genetic information in the form of DNA and contain multiple genes. Each gene is a segment of DNA that codes for a specific protein or trait. Lysosomes, option 3, are membrane-bound organelles that contain enzymes and are involved in cell waste disposal. The nuclear membrane, option 1, is a double membrane that surrounds the nucleus and separates it from the rest of the cell. The cell membrane, option 4, is the outermost boundary of the cell that controls movement in and out of the cell. Therefore, option 2, chromosomes, is the correct location for genes in cells.