The portion of the Sonora Desert which lies in the Southwestern United States is the most populated area within the region. Six of the top ten major population centers of the region are found within its borders: Phoenix, Tucson, Mesa, Chandler, Glendale, and Scottsdale, all in Arizona.
Insertion. Insertion. 1. (Science: anatomy) The place of attachment, as of a muscle to the bone which it moves. 2. (Science: genetics) a rare nonreciprocal translocation involving three breaks in which a segment is removed from one chromosome and then inserted into a broken region of a nonhomologous chromosome.
insertion. 1. the act of implanting, or condition of being implanted. 2. the site of attachment, as of a muscle to the bone that it moves. 3. in genetics, a rare nonreciprocal type of translocation in which a segment is removed from one chromosome and then inserted into a broken region of a nonhomologous chromosome.. the act of implanting, or condition of being implanted. 2. the site of attachment, as of a muscle to the bone that it moves. insertion sequence (IS). see transposable genetic elements. velamentous insertion. attachment to a membrane, such as the umbilical cord to the fetal membranes.