Gap Fill - Dog Years - Level 6


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   age      analysis      comparison      decades      formula      little      mammals      multiplying      precisely      traditionally  

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For , dog lovers have been incorrectly calculating the of their pet pooches. People have worked out their dog's age in "human years" by by seven. However, researchers at the University of California San Diego School of Medicine in the USA have come up with a new . They say it more determines canine age. Their new method requires a more than simple mental arithmetic to work out a dog's age. It involves a of the genomes of dogs and humans. Scientists had to analyse how DNA changes as humans and dogs age. The scientists regard such DNA as the best way to measure the ageing speed of .

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