Mumbai, July 7 :    Mumbai, July 7:  Key tests lie in oil, telecom The legacy may weigh heavily on the shoulders of the two brothers - Mukesh and Anil Ambani - as they steer the Rs 65,000-crore colossus Reliance Industries through the crossroads. This comes at a time when the group has taken its first tentative steps in sectors as diverse as infocom, retailing of petro-products, power and perhaps go the whole hog into life sciences after attaining a dominant share in the country's polyester and petrochemical businesses. Long before Bill Gates changed his job profile at Microsoft, Dhirubhai Ambani had devised a new role for himself as a mentor at Reliance, leaving the day-to-day management of the group in the hands of his two sons. The few hours he spent in the office was basically spent in strategising and it was said that the aggressive bid for IPCL stemmed from Dhirubhai's prodding. Bidding for the petroleum companies - HPCL or BPCL, both of which have a combined 40 per cent market share in the retail market of petro products, may be the first challenge that they will face. The group's strategy on power is yet to crystallise, say observers, and some fine-tuning of its in-house mega-crore power projects with its bulge bracket acquisition of BSES will be a challenging task for the two brothers. The power and telecom forays will require huge cache of funds, and while the group is known for its dexterity in tapping money from across the world, it may have to prioritise its needs in the coming years, say observers. 'Without the charisma of their dad, and in the backdrop of the global meltdown in the telecom sector, it would be interesting to see how they are going to raise the money for funding the new projects and also ensuring its viability.' Reliance without Dhirubhai may be hard to imagine but the 13 days when the two sons managed the company while the patriarch was battling for his life may bolster the confidence of many investors in the ability and acumen of Mukesh and Anil. The group is known for its aggressive approach in tapping funds, be it the convertible bonds or the 100-year yankee bonds. Reliance's Infocom venture alone has earmarked Rs 15,000 crore. The infocom blueprint is still hazy for outsiders as the group has bet heavily on the basic telephony sector despite its presence in cellular telephony. It also hopes to ride on wireless in local loop (WiLL), while players like the Tatas and Bhartis have hedged their the bets in cellular and basic. In petrochemicals too, where the group is now counted among the top five global producers in certain products, the challenge will now be to move further up the ladder, analysts say. Yet, questions may be raised as the levers of control are passed onto the two brothers. Can the two brothers control the same steering wheel? The company observers are emphatic when they say that this will not pose a problem. The two sons have contrasting styles. While Mukesh is the introverted hands-on manager, Anil is an extrovert who networks with the people that matter. The roles could be complementary, commented an observer. Mukesh might takeover as chairman, and may be the first among equals, as Dhirubhai deemed.