The skin's dermis is made of layers of cells, connective tissue and several structures that aid in maintaining its function. These structures include blood vessels, hair follicles, lymph vessels and glands.
XnY one color blind boy. 1  Probability of having a color blind daughter is (1/2 x 1/2) or 1/4 or 25% (0.25) This is because both sex and colorblindness are involved in the solution.  The probability that their first son is color blind is 50% (0.50). In this question only males are part of the solution.
If a mother has the hemophilia trait, that means that her son will have hemophilia. Hemophilia, along with color blindness, is a sex-linked recessive trait. Hemophilia is when a person lacks a clotting factor in the blood. This results in the decreased ability to have blood clots. This can be dangerous because a person may internally or externally bleed to death.