According to the biological species concept, speciation consists of the evolution of biological barriers to gene flow. The most important distinction is between _______ and _______ barriers.
A. male; female
B. sexual selection; natural selection
C. temporal; spatial
D. ecological; evolutionary
E. prezygotic; postzygotic
Answer: E. prezygotic; postzygotic
Biology & Microbiology
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A ________ consists of an organism's common ancestor and all of its descendents
a. phylogenetic group b. phenetic group c. monophyletic group d. gene pool
Biology & Microbiology
GENETIC DRIFT IS THE RESULT OF _____
Fill in the blank(s) with the appropriate word(s).
Biology & Microbiology
Protection Mechanism I: temporal
What will be an ideal response?
Biology & Microbiology
Select the best response to the question. ?What is a consequence of untreated tapeworm?
A) anal itching B) abscesses C) anemia D) seizures
Biology & Microbiology