👉 Catacrotism is a term used in medicine to describe the condition of an organism where it has multiple copies of the same gene, called a "catalytic copy," located on the X chromosome. This means that each individual cell contains one copy of the gene, which can lead to genetic disorders such as Tay-Sachs disease and sickle cell anemia. Catacrotism occurs when the gene responsible for producing a particular protein is duplicated in multiple locations on the X chromosome.