What hormone derivative is useful in treating inflammatory condition such as rheumatoid arthritis: ?

Corticosteroids

Corticosteroids are hormone produced by the body or pharmaceutically manufactured, used for the variety of inflammatory and non-inflammatory conditions such as arthritis, allergic reactions, asthma, skin rashes. However, the use of Corticosteroids help to regulate autoimmune activity and they act by as immune inhibitors by suppressing autoimmune attacks which are caused by inflammation in rheumatoid arthritis.

the father in the first generation probably had the recessive colorblind trait in his x chromosome. if he and his wife both had the colorblind trait, even if she had 1 recessive and 1 dominant, then that trait would be passed on to their kids.

(since you didn't attach the family tree this is just an assumption)