Gap Fill - Dog Years - Level 5


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   age      best      canine      changes      formula      incorrectly      multiplying      scientists      simple      speed  

Paragraph 1

Dog lovers have been calculating their pet's . They have been working out their dog's age in "human years" by by seven. However, researchers at the University of California have come up with a new . They say it precisely finds out age. The new method needs more than mental arithmetic to work out a dog's age. It involves comparing the of the DNA of dogs and humans. The regard such DNA analysis as the way to measure the ageing of dogs and humans.

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