BIOLOGY 1M03 Lecture : BIO 1M03 - chap 27.docx
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7 Mar 2012
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What problems does horizontal gene transfer cause for evolutionary biologists?
It can make reconstruction of phylogenetic trees difficult because it can obscure phylogenetic relationships. |
It can cause physiological problems in some organisms, making it hard to study them. |
It can make breeding between different individuals of the same species difficult. |
Because it is transfer of genes between the same species, it can make individuals look more similar than they actually are. |
All of the above Which statement best describes the maximum parsimony approach to the reconstruction of phylogenetic trees?
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Cladistic methods of phylogenetic inference are based on which of the following?
synapomorphies (shared derived characters) that are shared by taxa that descend from a common ancestor |
similarities in characters between taxa that suggest common ancestry |
clustering algorithms that group taxa based on their degree of similarity |
uniquely derived characters show the most recently evolved taxa |