Researcher Randy Lewis and his collaborators wanted to manufacture fibers of spider silk by inserting spider genes into goats. These "transgenic" goats produced milk that contained an extra protein. Lewis and his team extracted that protein from the milk. They then removed the fibers one at a time with a metal rod and spun them into silk. While the lightweight fiber was strong, it was not yet as strong as real spider silk. "Nothing is as strong as the natural [spider-produced] fiber yet," Lewis said at the time, adding, "but we are working on solving that problem."
Do It!
Lewis's team _________ spider-like silk.
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A classified
B crystallized
C generated
D rejected
C generated
C generated
The correct answer is C: generated.
Lewis's team "generated" spider-like silk by inserting spider genes into goats and extracting the silk protein from the milk of these transgenic goats. They then spun the fibers into silk using a metal rod. However, at the time, the silk produced was not as strong as natural spider silk, and the team was working on finding a solution to this problem.