Chapter 12
Which best describes a branch point in a phylogenetic tree?
new lineage
List the different levels of the taxonomic classification system.
Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.
phylogeny
Evolutionary history of a species
the taxonomic classification system is
Species are the most specific category of classification.
analogies is
They are derived by response to similar environmental pressures
What is true about organisms that are a part of the same clade?
They evolved from a shared ancestor.
maximum parsimony
applying the simplest, most obvious way with the least number of steps
Which best describes the relationship between chimpanzees and humans?
chimpanzees and humans evolved from a common ancestor
A monophyletic group is a ________.
clade
What is a phylogeny a description of?
evolutionary history
What do scientists in the field of systematics accomplish?
organize and classify organisms
homologous traits
share a similar structures of organisms resulting from the common descent from a common ancestor
What kind of trait is important to cladistics?
shared derived traits
. How does a phylogenetic tree indicate major evolutionary events within a lineage?
shows the order in which evolutionary events took place and in what order certain characteristics and organisms evolved in relation to others.
molecular systematics
uses DNA and other molecular data to determine evolutionary relationships