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Some species in a hypothetical family of beetles are winged, and others are wingless. Which of the following would be most useful in determining whether having wings or being wingless was the ancestral trait?
Respiratory
Pertaining to or affecting respiration or the organs involved in breathing.
Congestive Heart Failure
A chronic condition where the heart is unable to pump blood effectively, leading to fluid buildup and breathlessness.
Leukemia
A variant of cancer affecting blood and bone marrow, known for the overproduction of unusual white blood cells.
Bruising
The appearance of discoloration on the skin caused by bleeding underneath, typically due to trauma.
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