Sex-linked

• What are traits on the X chromosomes called?

  1. linked or sex-linked traits
• What are the four diseases associated with sex-linked genes?

  • Color blindness
  • Hemophilia
  • Hunter Syndrome
  • Muscular dystrophy
• What is color blindness?

  It is the inability to distinguish different colors of the spectrum, which can range from mild to severe.
• What is hemophilia also known as?

  It is also known as bleeder's disease.
• What causes Hunter Syndrome?

  It is caused by a lack of certain sulfatase, which is a type of enzyme.
• What are the characteristics of Hunter Syndrome?

  It is characterized by a large head, mental retardation, and coarse facial features.
• What is muscular dystrophy?

  It is a progressive wasting of muscles due to muscle degeneration.