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Unformatted text preview: 3. To be considered biologically fit, production of healthy fertile offspring is needed. 4. One of the Grants research projects focuses on beak size in the medium ground finch. This finch uses its strong beak to crush seeds. Given a choice of small or large seeds, the birds eat mostly smaller ones, which are easier to crush. Large seeds from one plant species are common on the island, but these large seeds are particularly difficult to crack. 5. To main forces of changes in a gene pool are genetic drift and mutation....
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This note was uploaded on 09/21/2011 for the course BIOG 1110 taught by Professor Randywayne during the Spring '09 term at Cornell University (Engineering School).
- Spring '09