Biology 1201A Lecture Notes - Lecture 18: Systematic Biology, Phylogenetic Tree, Parallel Evolution
31 Oct 2017
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Document Summary
Knowing an organism can be crucial can mistake one organism for another. Organisms living in similar settings and pursuing similar lifestyles often resemble one another even though they do not share an immediate evolutionary history. Need to understand whether similar structures or similar looking structures are grounds for grouping species together. There is a tendency for organisms living under the same conditions to develop similar body forms: known as parallel or convergent evolution depending on the evolutionary relatedness of the organisms involved. Convergent evolution: refers to phylogenetically more distantly related organism. Parallel evolution: refers to more closely related ones. The fungus affects the growth of leaves changes their appearance and odour. In some places, there may not be enough nitrogen for plants. There are a diversity of ways that plants trap insects to directly or indirectly obtain nitrogen. Trying to understand how biologist distinguish between convergent and parallel evolution. Helps us organize and understand information about the biological world.
