Question

question 14 of 25
which organisms are most closely related?
a. aimophila aestivalis and passerella iliaca
b. junco hyemalis and clangula hyemails
c. somateria fischeri and olor columbianus
d. mergus serrator and mergus merganser

Explanation:

In biological classification, organisms with the same genus are more closely related than those with different genera. The first part of a scientific name is the genus. Only in option D, Mergus serrator and Mergus merganser, do the organisms share the same genus (Mergus).

Answer:

D. Mergus serrator and Mergus merganser