What is the probability II2 is a carrier of the disease numb

What is the probability II-2 is a carrier of the disease (number between 0 and 1)?

II-1 and II-2 are expecting a child. The sonogram shows they will be having a son. What is the probability he will develop the disease late in life?

II-1 and II-2 have their son. At an early age, it is apparent that he is color-blind. What is the chance he will develop the disease late in life?

disease DEB color blind pedigree color blind and disease A recessive trait for a late-onset neurological disease is located 8 map units from the recessive deutan color blindness trait, on the X chromosome. Below is a pedigree from a family in which both traits are found. The woman\'s husband is color-blind, and she has two sons who show the disease but are not color blind. Her daughter shows neither trait, and is well past the age where the symptoms appear.

Solution

1. If II-2 must be a carrier then the probability is 1, that the individual is a career.

2. The probability of the son between II-1 and II-2 (career woman) to have the disease is 0.5.

3. Though, he has been identified as color-blind at an early age, the chance he will develop the disease late in life would be 0.5.