Most cells in the human body are produced by mitosis. These are the somatic (or vegetative) line cells. Cells that become gametes are referred to as germ line cells. The vast majority of cell divisions in the human body are mitotic, with meiosis being restricted to the gonads.
Technically, the caste is called Patidar, and Patel is the most common last name among its members. For all intents and purposes, Patel and Patidar are the same, says Nilam. They weren't officially recognized as a caste until the British-run government declared them one in the 1930s.
Shudra is caste but overtime they became divided. In the article you pointed to it stated Nair is a Sudra caste and it also stated they were warrior like. Other castes of South India that were Shudra castes are Kapus, Balija Naidus, Gavara Balijas, Gajula Balijas, Setti Balijas, Munuru Kapus, Reddy, Velamas, Kammas, Naiker, etc etc.