Evolutionary Trees

Question 1

What book did Willi Henning publish

Answer 1

Phylogenetic Systematics

Question 2

What are the definitions of apomorphy, plesiomorphy, and synapomorphy?

Answer 2

Apomorphy- derived (novel) character
Plesiomorphy- ancestral (pre-existing)
Synapomorphy- a derived character shared by two or more linkage

Question 3

What is a clade

Answer 3

Clade are groups that share a common ancestor

Question 4

What is Ockam’s Razor

Answer 4

Ockam’s Razor- when choosing among competing hypotheses, the one with the fewest assumptions is best

Question 5

What is convergent evolution

Answer 5

Similarities evolved independently in different lineages

Question 6

What are reversals

Answer 6

evolved back into the ancestral trait

Question 7

Convergents and reversals are both forms of what and represent what about evolutionary relationships

Answer 7

homoplasy and they do not represent true evolutionary relationships