Which of these pairs of organisms are most clearly related

a. aimophila aestivalis and passerella iliaca
b. junco hyemalis and clangula hyemails
c. mergus serrator and mergus merganser
d. somateria fischeri and olor columbianus

In fruit flies, gray bodies (g) are dominant over black bodies (g), and brown pigments (n) are dominant over yellow pigments (n). each individual possesses two alleles for each trait. if a fly that is homozygous dominant for both traits is crossed with a fly that is homozygous recessive for both traits, what is the predicted genotype of the offspring.

Which of the following does not make up ground substance of connective tissue? hyaluronic acid elastic fibers glycosaminoglycan proteoglycan

Which atmospheric later is where earths northern and southern lights occur