| Bank of India Clerk Call Letter 2010 Posted: 24 Sep 2010 11:44 AM PDT
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| Wheat genome code cracked Posted: 24 Sep 2010 11:40 AM PDT
British scientists have decoded the genome of wheat, in a breakthrough research that will prove valuable to crop breeders in countries like India, in increasing the yield of the staple food crop. Wheat production worldwide is under threat from climate change at a time when there is an increase in demand from a growing human population.
Scientists at the University of Liverpool, in collaboration with the University of Bristol and the John Innes Centre, have sequenced the entire wheat genome and will make the DNA data available to crop breeders to help them select key agricultural traits for breeding.
Scientists have analysed the wheat genome, which is five times larger than the human genome and is the largest genome to be sequenced till date.
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| First Marine census Posted: 24 Sep 2010 11:38 AM PDT
First global count of marine life logs 230,000 species—but scientists warns of mass extinctions. It has been the biggest and most comprehensive attempt ever to answer that age-old question—how many fish are there in the sea? A 10-year study of the diversity, distribution and abundance of life in the world's oceans attempts just that.
The Census of Marine Life estimates there are over 230,000 species in our oceans.
A team of over 360 scientists around the world surveyed 25 regions, from the Antarctic through the temperate and tropical seas to the Arctic.
Over fishing, degraded habitats, pollution and the arrival of invasive species are major threats to the marine life. But more problems are around the corner: rising water temperatures and acidification thanks to climate change and the growth in areas of the ocean that are low in oxygen and, therefore, unable to support life.
Among the major findings are:
—A fifth of the world's marine species are crustaceans such as crabs, lobsters, krill and barnacles. Add in molluscs (squid and octopus) and fish and that accounts for nearly half the species in world's seas.
—Species often used in conservation campaigning—whales, sea lions, turtles and sea birds—account for less than 2% of the species in the oceans.
—Enclosed seas such as the Mediterranean, Gulf of Mexico, China's shelves, Baltic, and the Caribbean are having the most threatened biodiversity.
—The most diverse regions are around Australia and south-east Asia.
—Australian and Japanese waters contain more than 30,000 species each and are among the most biologically diverse in the world.
—The manylight viperfish (Chauliodus sloani) is the most "cosmopolitan" marine creature with a presence in around a quarter of the world's seas.
—The number of marine fish species known to science stood at 16,764, and was growing at around 100 a year. There are believed to be 22,000 fish species in the world.
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| Bank of India Clerk example Question paper Quantitative Aptitude Posted: 24 Sep 2010 10:47 AM PDT |
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