Which of what? You need to be specific when asking questions.
The upper part is colon, the lower part is rectum
The answer to this question is that this are all common by
being x linked. X linked inheritance means that a disorder is manifested /
located in the x chromosomes. The following are the known X linked disorders
such as color blindness, hemophilia, duchenne muscular dystrophy, menkes
disease, and others.