The Galápagos Islands are inhabited by 13 species of Darwin's finches that evolved from a single species. This is an example of
A) clinal variation.
B) adaptive radiation.
C) directional selection.
D) genetic drift.
B
Biology & Microbiology
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The above photomicrograph is of
a. mycelium. b. protistans. c. mycorrhizae. d. stolons. e. rhizoids.
Biology & Microbiology
Cells that have developed an enlarged nucleus and lost some specialized structures and functions, but is not yet cancer, is called ________
Fill in the blank(s) with correct word
Biology & Microbiology
Cardiac output is determined by:
a. blood volume. b. venous return. c. blood volume and venous return. d. stroke volume only. e. stroke volume and heart rate
Biology & Microbiology
The contractile vacuole of the paramecium is possibly an evolutionary of the kidney
a. true b. false
Biology & Microbiology