Color blindness is a sex-linked (specifically, X linked) rec…

Color blindness is a sex-linked (specifically, X linked) recessive genetic disorder.  In a coupe, mom is known to be homozygous and experiences color blindness, Dad is not colorblind.  If they have 4 sons, what is the probability that they have a colorblind son? 

In a couple, there is a woman whom is homozygous and otherwi…

In a couple, there is a woman whom is homozygous and otherwise healthy while her husband is heterozygous for a genetically inherited recessive autosomal disorder.  They decide to become parents, what is the probability that they will have a healthy child?    Make up alleles that are appropriate and do the Punnett square, use it to answer the question.