Os acetabuli and mixed-type FAI. This 79yo male with a history of right hip pain for 1 month has features of both pincer and cam-type FAI. Femoral head asphericity (yellow arrow), irregular anterosuperior bump (green arrowheads), os acetabuli (yellow arrowhead) and hypertrophic acetabular rim (blue arrow).
1 The other 22 pairs are autosomes (non-sex chromosomes) and look the same for both males and females. 2  The DNA making up each of our chromosomes contains thousands of genes. 3  At the ends of each of our chromosomes are sections of DNA called telomeres.
The sequence of these bases forms a code, which controls the production of proteins in the cell. A section of the DNA that codes for a specific protein is called a gene. The Double Helix structure of DNA allows it to replicate easily due to the weak hydrogen bonds that unzip quickly. The structure allows allot of information to be stored in small space as the double helix curves.