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Lobsters usually develop one smaller, cutter claw and one l

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Lobsters usually develop one smaller, cutter claw and one l [#permalink] New post 11 Jul 2019, 14:44
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Lobsters usually develop one smaller, cutter claw and one larger, crusher claw. To show that exercise determines which claw becomes the crusher, researchers placed young lobsters in tanks and repeatedly prompted them to grab a probe with one claw-in each case always the same, randomly selected claw. In most of the lobsters, the grabbing claw became the crusher. But in a second, similar experiment, when lobsters were prompted to use both claws equally for grabbing, most matured with two cutter claws, even though each claw was exercised as much as the grabbing claws had been in the first experiment.

Which of the following is best supported by the information above?

(A) Young lobsters usually exercise one claw more than the other.
(B) Most lobsters raised in captivity will not develop a crusher claw.
(C) Exercise is not a determining factor in the development of crusher claws in lobsters.
(D) Cutter claws are more effective for grabbing than are crusher claws.
(E) Young lobsters that do not exercise either claw will nevertheless usually develop one crusher and one cutter claw.
[Reveal] Spoiler: OA

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Lobsters usually develop one smaller, cutter claw and one l   [#permalink] 11 Jul 2019, 14:44
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Lobsters usually develop one smaller, cutter claw and one l

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