Name the man who in the 1930s raised a volunteer corps of about 100,000 pathans, known as 'Khudai Khidmatgars' or Servants of God and affiliated it to the Congress?
Tetrad is a homologous chromosome pair in the given options. A homologous chromosome pair is a pair of chromosomes one from father and one from mother that has same gene sequence after the process of meiosis.