Mosaicism is a form of non-Mendelian inheritance wherein two or more cell populations with different genotypes exist in an organism, derived from a single zygote, as a result of experimental manipulation or to faulty distribution of genetic material during mitosis.
(December 2013) The helix piercing is a perforation of the helix or upper ear (cartilage) for the purpose of inserting and wearing a piece of jewelry. The piercing itself is usually made with a small gauge hollow piercing needle, and typical jewelry would be a small diameter captive bead ring, or a stud.
The centermost cartilage, a tough curved ridge inside the pinna, carries the name antihelix or anthelix, depending on the literature referenced. Following along the ear lobe, up to the top of the ear known as the helix, the antihelix begins just at the top of the ear lobe and travels parallel to the helix. In terms of placement, it forms a C around the concha, the area of leading into the ear canal.