Questão 66

The Belgian blue is an ugly but tasty cow that has
40% more muscle than it should have. It is the product
of random mutation followed by selective breeding as,
indeed, are all domesticated creatures. But where an
[5] old art has led, a new one may follow. By understanding
which genetic changes have been consolidated $\in$ the
Belgian blue, it may be possible to design and build
similar versions of other species using genetic
engineering as a short-cut. That is precisely what Terry
[10] Bradley, a fish biologist at the University of Rhode
Island, is trying to do. Instead of cattle, ______ is doing
it $\in$ trout. ______ is one of two projects that may soon
put the first biotech animals on the dinner table.

The Economist Jun 10th 2010

According to the text, the best definition for the term “short-cut” (line 09) is