BIO 150: Phylogenetics (2) QUESTION
AND ANSWERS RATED A+ (4 PGS)
What is a Phylogeny? What is a phylogenetic tree? - correct answer ✔The
evolutionary history of a group of organisms; Graphical representation of our
hypotheses of the evolutionary relationships among species
What does a node represent? - correct answer ✔It represents speciation
events and the MOST RECENT COMMON ANCESTOR (MRCA) of
descendent taxa
What is an ingroup? What is an outgroup? - correct answer ✔The taxa of
concern; some taxon outside taxa you're interested in (a starting point/point of
comparison)
What are sister taxa? - correct answer ✔Taxa that are each other's closest
relative on the tree.
What is convergent evolution? - correct answer ✔Two unrelated organisms
evolving the same or similar structure independently of each other.
What is a homoplasy? - correct answer ✔Similar trait due to convergent
evolution (should NOT be used in phylogenies b/c will lead to incorrect
conclusions)
What is homology? - correct answer ✔Similar trait due to common ancestry
(should be used in phylogenies).
AND ANSWERS RATED A+ (4 PGS)
What is a Phylogeny? What is a phylogenetic tree? - correct answer ✔The
evolutionary history of a group of organisms; Graphical representation of our
hypotheses of the evolutionary relationships among species
What does a node represent? - correct answer ✔It represents speciation
events and the MOST RECENT COMMON ANCESTOR (MRCA) of
descendent taxa
What is an ingroup? What is an outgroup? - correct answer ✔The taxa of
concern; some taxon outside taxa you're interested in (a starting point/point of
comparison)
What are sister taxa? - correct answer ✔Taxa that are each other's closest
relative on the tree.
What is convergent evolution? - correct answer ✔Two unrelated organisms
evolving the same or similar structure independently of each other.
What is a homoplasy? - correct answer ✔Similar trait due to convergent
evolution (should NOT be used in phylogenies b/c will lead to incorrect
conclusions)
What is homology? - correct answer ✔Similar trait due to common ancestry
(should be used in phylogenies).
