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

question 33

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 survive and reproduce well.
• B) The two forms live in similar habitats and have similar food requirements.
• C) The two forms have many genes in common.
• D) The two forms are very similar in appearance.

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Definitions:

Timing

The selection of an appropriate or opportune moment to execute an action, often critical in contexts such as market entry, product launches, or investments.

Markdowns

Reductions in the selling price of goods, often to clear old stock or boost sales.

Valuable Selling Space

Prime retail or commercial area within a store or market that is strategically used to display and sell products to maximize customer purchases.

Markdown

A reduction from the original or listed price of a product, often to clear inventory or stimulate sales.