3-1. 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 Give all answers to the 0.001 decimal place What is the probability II- 2 is a carrier of the disease? 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 I--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? .