A tetrad is best described by Four chromatids. It is formed from two homologous chromosomes, each consisting of two chromatids in the first stage of meiosis called prophase1.
Madurai is one of the major cities in the Indian State of Tamil Nadu. It is the 25th most populated city in India, located on the banks of River Vaigai.
In the Indian history, Madurai was the capita of Pandyas.