Describe the parental genotypes that would produce colorblind children.

Colorblind males will have a normal Y chromosome and an X chromosome with the recessive trait, expressed as XoY, with "o" representing the color blindness trait. Colorblind females will have two affected X chromosomes (XoXo). Together, a colorblind father and a colorblind mother will produce colorblind sons and daughters. Let the genotype for a male child with color blindness be XoY and for a female child, the genotype would have to be XoXo.

C) they are specialized meaning they are designed to do different things

The answer is b, as with an inference you make a statement with no evidence