Bird Guides Once Listed the Myrtle Warbler and Audubon's Warbler

question 54

Multiple Choice

Bird guides once listed the myrtle warbler and Audubon's warbler as distinct species. Recently, these birds have been classified as eastern and western forms of a single species, the yellow-rumped warbler. Which of the following pieces of evidence, if True, would be cause for this reclassification?

• A)The two forms interbreed often in nature, and their offspring have good survival and reproduction.
• B)The two forms live in similar habitats.
• C)The two forms have many genes in common.
• D)The two forms have similar food requirements.
• E)The two forms are very similar in coloration.

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Definitions:

Multiaxial

Describing joints that allow movement around multiple axes and planes.

Saddle

A supportive structure for a rider or load, typically used on horses, bicycles, motorcycles, or other vehicles.

Hinge

A mechanical bearing that connects two solid objects, typically allowing a limited angle of rotation between them.

Pivot

A point of rotation or the act of rotating around a particular point, often used metaphorically to describe a shift in strategy or position.