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Exam 1 Text 3-5

Exam 1 Text chapter 3, 4, 5

QuestionAnswer
The evolutionary history of a group of species is called its ___________, and that a ____________ is a graphical summary of this history. phylogeny, phylogenetic tree
__________ is a homologous trait that is shared among certain species and it similar because it was modified in a common ancestor. synapomorphy
Any group that includes an ancestor and all of its descendants is called a ________________. monophyletic group
Each monophyletic group on an evolutionary tree can be identified by one or more _____________. Synapomorphies
Synapomorphies are important because they identify _________ groups. monophyletic
A phylogenetic tree inferred by clustering synapomorphies is called a ____________. cladogram
By convention, ____________ are indicated on cladograms with bars across the branches and then described in a accompanying key or labels. synapomorphies
Biological structure of an organism is called _______________. morphology
Morphological similarities like the eyes and skulls evolved independently in different lineages is called ____________. convergent evolution
If _________ or ________ has occurred, then similar traits are not homologous and do not qualify as synapomorphies - they are both called convergent evolution or reversal, homoplasy
Why synapomorphies are important ? they identify monophyletic groups
Each monophyletic group on an evolutionary tree can be identified by one or more __________ synapomrphies
If similarities in traits are not due to homology then they are due to ________. homoplasy
What does it mean by using parsimony to distinguish homology from homoplasy ? less number of evolution is most likely
Created by: agerwin911
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