Male mallards have had emerald green head
feathers and wings with metallic blue patches
for hundreds of years, whereas female mallards
have been drab, brown-feathered ducks. This
phenotypic situation suggests that mallards
may be an example of
a. directional selection.
b. polyploidy.
c. allopatric speciation.
d. disruptive selection.
e. sexual selection.
E
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Which of the following hormones is NOT produced by the adrenal gland?
A. epinephrine B. cortisol C. prolactin D. aldosterone E. norepinephrine
Which process is responsible for moving bulk cellular wastes across the cell membrane?
A. diffusion B. endocytosis C. pinocytosis D. osmosis E. exocytosis
Genomics
What will be an ideal response?