Biology 1201A Lecture Notes - Lecture 15: Biogeographic Realm, Convergent Evolution, Reproductive Isolation
4 Apr 2020
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19. 3a the analysis of homologous characters sheds light on evolutionary relationships inherited the trait from their common ancestor. Phenotypic similarities between organisms reflect their underlying genetic similarities. Homology: having the same or similar relation, relative position, or structure. Even though characters are homologous, they may differ greatly among species. Sometimes distantly related species living in different biogeographical realms are sometimes very. Any trait can be described as homologous in two or more species as long as they. Convergent evolution: evolution of similar adaptations in distantly related organisms that. Homoplasy: phenotypic similarity that evolved independently in different similar in appearance, even though they arose independently occupy similar environments lineages. 19. 3b morphological characters provide abundant clues to evolutionary relationships. 19. 3c behavioural characters are useful when animal species are not morphologically distinct. Examination of behaviours for clues about relationships are used when external morphology. Morphological structures often provide useful information for phylogenetic analyses.
