Multiple Trait Analysis (Beak Width and Beak Depth)on the Medium

question 2

Multiple Choice

Multiple trait analysis (beak width and beak depth) on the medium ground finch,in response to the drought of 1976-77,has generated the three-dimensional graph,shown in the accompanying figure.If the blue triangles represent fitness levels for the quantified parameters,then the birds showing the greatest fitness should have ________.

• A) deep, wide beaks
• B) deep, narrow beaks
• C) shallow, wide beaks
• D) shallow, narrow beaks

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Definitions:

Dimethylsulfide

An organic sulfur compound with the formula (CH3)2S, known for its distinctive smell reminiscent of the ocean or cooked corn.

Alkene

A hydrocarbon that contains at least one carbon-carbon double bond in its structure.

OsO4

Osmium tetroxide, a compound used in organic chemistry to add oxygen atoms to double bonds in alkenes.

Periodic Acid

A powerful oxidizing agent, represented chemically as HIO4, known for cleaving vicinal diols and forming aldehydes or ketones.