The last one. Makes only have one X chromosome. 
In turn if he has a daughter she's most likely to be color blind too.
        
             
        
        
        
“Genes and environmental effects are often part of the explanation. “
“...disease-causing alleles of one gene may be suppressed by alleles of another gene elsewhere in the genome, or a person's overall health may influence the strength of a disease phenotype.”
https://www.khanacademy.org/science/high-school-biology/hs-classical-genetics/hs-non-mendelian-inheritance/a/polygenic-inheritance-and-environmental-effects
        
             
        
        
        
D. Proteins are composed of amino acids and determines all the structures and functions of the organism.
        
                    
             
        
        
        
Answer:
Superficial Anatomy is most useful for <em><u>examining the outside features of the body</u></em>.