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•SPECIATION
•MACROEVOLUTION
•2 PATTERNS OF SPECIATION FIGURE 24.1 P. 464
•ANAGENESIS (PHYLETIC EVOLUTION)
•CLADOGENESIS (BRANCHING EVOLUTION)
THE BIOLOGICAL SPECIES CONCEPT EMPHASIS REPRODUCTIVE ISOLATION P. 465
SPECIES
•BIOLOGICAL SPECIES CONCEPT
PREZYGOTIC AND POSTZYGOTIC BARRIERS ISOLATE THE GENE POOLS OF BIOLOGICAL SPECIES P. 465
Define each, see Figure 24.5 p. 467
PREZYGOTIC BARRIERS
•HABITAT ISOLATION
•BEHAVIORAL ISOLATION
Figure 24.3 p. 466
•TEMPORAL ISOLATION
•MECHANICAL ISOLATION
•GAMETIC ISOLATION
POSTZYGOTIC BARRIERS P. 467
•REDUCED HYBRID VIABILITY
•REDUCED HYBRID FERTILITY
FIGURE 24.4 P. 467
•HYBRID BREAKDOWN
EVOLUTIONARY BIOLOGISTS HAVE PROPOSED SEVERAL ALTERNATIVE CONCEPTS OF SPECIES P. 468
•ECOLOGICAL SPECIES CONCEPT
•MORPHOLOGICAL SPECIES CONCEPT
MODES OF SPECIATION P. 468
•ALLOPATRIC SPECIATION
•SYMPATRIC SPECIATION
ALLOPATRIC SPECIATION: GEOGRAPHICAL ISOLATION CAN LEAD TO THE ORIGIN OF SPECIES P.469
•FIGURE 24.8 P. 469
•WHAT ARE CONDITIONS FOR ALLOPATRIC SPECIATION?
•WHAT IS THE KEY QUESTION ABOUT ALLOPATRIC POPULATIONS?
ADAPTIVE RADIATION P. 470
FIGURE 24.11 P. 471
SYMPATRIC SPECIATION: A NEW SPECIES CAN ORIGINATE IN THE GEOGRAPHOC MIDST OF THE PARENT PLANTS P. 473
•DEFINE
SUMMARY OF SYMPATRIC SPECIATION P. 475
THE PUNCTUATED EQUILIBRIUM MODEL HAS STIMULATED RESEARCH ON THE TEMPO OF SPECIATION P. 475
Punctuated equilibrium vs gradualism p. 475
Figure 24.17 p. 476