Here is how the question reads:
Heredity. Choose a human trait which follows Mendelian genetics; controlled by a simple gene with a dominant and a recessive allele. Describe this trait; either a common trait or one that is a disorder.
There are lots of human traits which follow basic Mendelian genetics.
Hemophilia is a sex-linked trait in humans. That means that the gene that is responsible for it resides on ...