👉 In genetics, a chromosomal is a segment of DNA that contains information about the genetic makeup of an organism. It consists of two strands of DNA that are usually separated by a double-strand DNA helix. Chromosomes have multiple copies of each gene (a chromosome), and they play important roles in the development of an organism's cells and tissues. Chromosomal inheritance refers to the way that traits, such as hair color or eye color, are passed down from parents to offspring through the process