University:
Eastern Kentucky University
Course:
BIO 495 | Evolutionary Application and Theory
Academic year:

2020
Views:

416

Pages:

1
Author:

levedzgetmo7f

. ~16 minutes  -  (HHMI Biointeractive)  Galapagos Finch Evolution   Name:_________ KEY _______ Date:__________   1. What is the “mystery of mysteries? _________ how new species form ____________   2. The Grants’ study on the island of Daphne Major studied what organisms? _______ finches _______   3. Where did the 13 species of finches on the islands come from?_____ from the mainland ________   4. How did the Grants catch the finches? _______ nets ______________   5. What features did they measure? _____ size and shape of beak, weight ______________   6. What happened in 1977 to the island? _________ drought ___________________   7. What type of birds were more likely to survive after this event? ___ birds with large beaks ___________   8. After the El Nino event in 1983, which birds were more likely to survive? _____ birds with small beaks ____   9. What keeps different species from mating on the Galapagos islands? ____ songs (and appearance) _____ 10. The most likely scenario explaining the different finches on the islands is that: a) different birds migrated to different islands b) one species evolved into many different species Summarize what happened to the finch population between 1976 and 1978.  _______________ the average beak depth became larger  11. Examine the graph below. _________________________ ________________________________________________________________________________ 12. Why did the finch populations change from 1976 to 1978? ______finches had to find food and those with small beaks died, larger beaked birds survived and passed that trait to their offspring _____________

Galapagos Finch Evolution Key

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