👉 Tetrasomy is a genetic abnormality that occurs when two or more chromosomes are missing in a cell, leading to an imbalance of genetic material. This can occur due to errors in DNA replication or during meiosis, and it can result in a variety of health issues, including intellectual disability, developmental delay, and some forms of cancer. Tetrasomy is typically diagnosed through a series of tests that measure the size and number of chromosomes in a cell. The abnormality may be detected by
