Two plant species interbreed and produce hybrid offspring. These offspring are unable to reproduce with either of the parent species, but they are fertile when breeding with each other. Which of the following can you infer from this information? Allopatric speciation has occurred as a result of interrupted gene flow.
Hybrid zones fused and have caused reproductive isolation.
Sexual selection has formed a new species due to prezygotic barriers.
Sympatric speciation has resulted in the formation of an allopolyploid species.

Choose the description that best matches each word. write the correct letter in the blank. 1. ostinato a. large, extended composition for chorus and orchestra 2. atonality b. full orchestra 3. musicology c. festive, march-like opening to a play or “semi-opera” 4. concerto d. small group of solo instruments 5. minimalism e. music contrasting a full orchestra and solo instruments 6. art song f. music played under the action to influence the mood 7. strophic form g. a vocal song focusing on artistic expression 8. incidental h. each stanza of a poem is set to the same music 9. oratorio i. repeated musical pattern that provides unity to a piece 10. dissonance j. steady beat; simple harmonies; short, repetitive melody 11. concertino k. harsh, unstable sounding of pitches; harmonic tension 12. tutti l. all 12 tones of chromatic scale, no tonal center 13. entrada m. the historical and scientific study of music