ch 25 Flashcards
(6 cards)
1
Q
phylogeny
A
evolutinary history of a species or group of related species
usually use fossils
2
Q
how can phylogenetic history be inferred
A
from morphological and molecular similarities in living organisms
similar morphologies or DNA sequencse are likely to be more closely related
3
Q
clade
A
a group of species that includes an ancestral species and all its descendants
4
Q
a shared primitive character
A
aa character that is shared beyond the taxon we are trying to define
5
Q
a shared derived character
A
an evolutionary novelty unique to a particular clade
6
Q
outgroups
A
species or group of species that is closely related to the ingroup
used to compare each ingroup with and differentiate between the derives and shared primitive characteristics
