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Unformatted text preview: Analogy and Homology Structures may be similar in different species Resemblance may occur when two unrelated organisms adapt to similar conditions o Convergent evolution o Similar structures would be analogous (similar function) o Ex: wings of birds and insects Resemblance may occur because 2 organisms share a common ancestry o Similar structures would be homologous o Ex: vertebrate appendages figure 4.11 Developmental Patterns The developmental stages of related organisms retain common features Early embryonic stages of vertebrates are very similar Genes controlling development have been conserved Molecular Biology Closely related organisms will be genetically more similar that distantly related organisms (are going to have more molecules in common)...
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This note was uploaded on 11/05/2011 for the course BZ 110 taught by Professor Karenraines during the Spring '08 term at Colorado State.
- Spring '08