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Lecture 8

BIOL 1F90 Lecture Notes - Lecture 8: Vestigiality, Biogeography, Centromere


Department
Biological Sciences
Course Code
BIOL 1F90
Professor
Fiona Hunter
Lecture
8

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BIOL1F90
Jan.20th,2016
Chapter21HistoryofEvolution(Continued)
Holomogy
Fundamentalsimilarityduetodescentfromacommonancestor
Anatomical
Development
Molecular
Anatomicalhomology
samesetofbonesinthelimbsofmodernvertebrateshasundergoneevolutionary
changetobeusedformanydifferentpurposes
Homologousstructuresarederivedfromacommonancestor
Vestigialstructureareanatomicalstructuresthathavenoapparentfunctionbut
resemblestructuresofpresumedancestors
Earwigglingmuscles,tailbone,embryonicgillridges
Identicalbonestructuresamonganimalspecies,causedbyacommonancestor
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