5/20/24 - Lecture 25: Speciation II: Phylogenetic Trees and Radiations Flashcards
1
Q
What is the significance of a node on a phylogenetic tree?
A
Most recent common ancestor of two species
2
Q
Taxa
A
Represent species (or something else) on the phylogenetic tree
3
Q
Does the order of tips (taxa) on a phylogenetic tree matter?
A
No, they can be rotated around a node
4
Q
Monophyletic clades
A
A group that includes all of the taxa descended from a specific common ancestor
5
Q
Adaptive radiation
A
The rapid divergence from single ancestor into an array of new species
6
Q
What causes adaptive radiation?
A
Sexual selection, ecological specialization, vacant ecological niches
