The Grants' finch research included morphological, geographic, genetic, and ecological data. Which of these could not be directly determined by examining the birds as they tagged them?
A) Morphological measurements could be directly made of bird size and weight in addition to measurements on beak depth.
B) Geographic data could be directly recorded according to where on the island the bird was found.
C) Complete genetic makeup could be directly determined though analysis of phenotypes.
D) Ecological data could be gathered by direct observation of food preference.
Answer: C
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