👉 In biology, a chromidae is a group of organisms that share a common ancestor. These organisms are characterized by having a single nucleus and typically have one or two sets of chromosomes, which are linked together in a complex structure called a chromatid. Chromosomes are the genetic material that carries the information about an organism's traits such as sex, age, and race. Chromosomes consist of two types of DNA: the nuclear DNA (DNA found on the ends of chromosomes) and the tel