BIO 2135 Lecture Notes - Lecture 14: Cell Potency, Heterotroph, Choanocyte
13 Oct 2017
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Original trait = zero score = symplesiomorphies. When asked to compare two taxons do not compare the sbynpleisiomorphies that connect them, compare their auto and apomorphies. Consists of an ancestor and all it"s descendants. With polyphyletic you are able to partially order the groups but unable to nd a common ancestry for the whole group (know they are related, they look so similar however, can not nd a common ancestry between them) Assume something is so dramatically different that they deserve their own group however, when looking more into it the groups collapse and actually nd something different. There are descendants, and an ancestor, but not all the descendants. Multicellular eukaryotes is not an autoapomorphy for animals (plants and fungi are both also multicellular) Ingestive heterotrophs is not an autoapomorphy for animals (in lab saw single cells that are ingestive heterotrophs) Should be said multicellular eukaryotes, ingestive heterotrophs, with cells with different function as the rst characteristic for animals.
