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.
Estimated New Cases of Colorectal Cancer per Year. Your lifetime risk of developing colorectal cancer is about 1 in 21 for men and 1 in 23 for women. Cancers of the colon and rectum account for 8% of the new cases of cancer in both men and women. Over 134,000 new cases are diagnosed each year. Of those, about 95,000 cases will be colon cancer and almost 40,000 cases will be rectal cancer.