Mumbai: Domestic equity benchmarks opened lower on Tuesday amid mixed cues from global markets, elevated crude oil prices and West Asia conflict. Sensex started at 73,484.38, down 122.37 points or 0.17 per cent. Similarly, Nifty began the trading session at 22,708.80, down 44.40 points or 0.20 per cent. In early deals, selling was seen in.