Use the figure to answer the question.
Which of the following pairs of animals show that animals with widely different adult features can be each other's closest relatives?
Definitions:
Sec-butyl
A radical or substituent derived from butane by removing a hydrogen atom from a secondary carbon, specifically the 2nd position.
IUPAC Name
The recommended approach for naming chemical compounds by the International Union of Pure and Applied Chemistry.
Bromoethyl
A two-carbon ethyl group attached to a bromine atom, often used in organic synthesis for reactions involving alkylation.
IUPAC Name
The methodical labeling of chemical compounds following the guidelines set by the International Union of Pure and Applied Chemistry.
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