The figure above shows the penis length of two species of snails found in different populations in Japan.The pattern of variation in this trait illustrates
A) reproductive character displacement.
B) a hybrid zone.
C) allopatric speciation.
D) sympatric speciation.
Correct Answer:
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Q13: The evolutionary species concept defines a species
Q14: Resource partitioning occurs
A)when the same plants produce
Q15: Which of the following is not a
Q16: A cline is a(n)
A) temporal gradient in
Q16: Allopatric speciation requires
A)complete geographic isolation.
B)overlapping distributions.
C)abutting distributions.
D)differences
Q19: When are hybrid zones expected to disappear
Q20: Which of the following statements describes a
Q21: The figure below shows the geological history
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