Investigating Oceanography
3rd EditionKeith A. Sverdrup, Raphael Kudela
547 solutions
Applications and Investigations In Earth Science
9th EditionDennis G. Tasa, Edward J. Tarbuck, Frederick K. Lutgens
1,295 solutions
Investigating Oceanography
3rd EditionKeith A. Sverdrup, Raphael Kudela
547 solutions
Earth
5th EditionStephen Marshak
433 solutions
Recommended textbook solutionsHuman Resource Management
15th EditionJohn David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine
249 solutions
Human Resource Management
15th EditionJohn David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine
249 solutions
Biology
1st EditionKenneth R. Miller, Levine
2,591 solutions
Hole's Human Anatomy and Physiology
13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis
1,402 solutions
Morphological and genetic comparisons group 30 species of snapping shrimp (genus Alpheus) into 15 pairs of closely related species. What is the best explanation for the fact that one member of each pair lives on the Atlantic side of the Isthmus of Panama, whereas the other member of each pair lives on the Pacific side?
-Different predator pressures in the Atlantic and Pacific selected for differences that resulted in the reproductive isolation of these species.
-These 15 pairs of species illustrate the pattern of punctuated equilibrium in which most speciation events take place in a short period of time.
-The pairs of species arose by allopatric speciation when the Isthmus of Panama separated their ancestral species.
-When these pairs meet in a hybrid zone, the reinforcement of reproductive barriers maintains each as a separate species.
-The 30 species of snapping shrimp evolved by sympatric speciation before the Isthmus of Panama formed.
Recommended textbook solutionsHuman Resource Management
15th EditionJohn David Jackson, Patricia Meglich, Robert Mathis, Sean Valentine
249 solutions
Hole's Human Anatomy and Physiology
13th EditionDavid N. Shier, Jackie L. Butler, Ricki Lewis
1,402 solutions
Biology
1st EditionKenneth R. Miller, Levine
2,591 solutions
Fundamentals of Anatomy and Physiology
11th EditionMartin
1,244 solutions