A property professional with nearly 20 years experience of estate agency in Suffolk and North Essex. During that time I have carried out market appraisals on over 5000 residential properties and have helped over 1500 people successfully sell their home.
Therefore, a son from a color-blind mother (who receives the trait from his mother on the X-chromosome) will always be color-blind, regardless of the state of the father (who can only give his son a Y-chromosome).
Question: I have a three yr old son who I think may be colorblind. It runs in my husband's family. My problem is that most vision tests have numbers that you are supposed to recognize to determine if you are color blind or not. My son, however, is not old enough to know what a number is.