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Crabs Have Claws on Their Front Legs and Many Sets

question 38

Essay

Crabs have claws on their front legs and many sets of walking legs (which lack claws) on segments posterior to the claws. Crabs can regenerate legs if they are lost. A walking leg was removed and tissue from the claw was transplanted onto the stump. If homeobox genes are responsible for the differentiation of leg types, what would you predict would happen to the stump? Describe analogous experiments that have been performed in other species.


Definitions:

Opportunity Cost

Opportunity cost represents the benefits an individual, investor, or business misses out on when choosing one alternative over another.

Marginal Product

The additional output resulting from using one more unit of a particular input, holding other inputs constant.

Value of the Marginal Product

The additional revenue generated by employing one more unit of a factor, such as labor or capital.

Profit-Maximizing

A strategy or process by which a business seeks to generate the highest possible profit from its operations.

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