26.1 phylogeny

Question 1

whats phylogeny

Answer 1

the evolutionary history of a species or group of species

Question 2

whats systematics

Answer 2

a discipline focused on classifying organisms and determining their evolutionary relationships

Question 3

whats taxonomy

Answer 3

how organisms are named and classified

Question 4

binomial nomenclature

Answer 4

Genus species

Question 5

whats a taxon

Answer 5

the named taxonomic unit at any level of the hierarchy is called

Question 6

phylogenetic tree

Answer 6

branching diagram

Question 7

the PhyloCode bases on

Answer 7

evolutionary relationships entirely (like a vex would be a sub category of reptilia since they evolved from reptiles)

Question 8

whats the phylocode

Answer 8

only names groups that include a common ancestor and all of its descendants

Question 9

evolutionary history can be represented in a ____diagram

Answer 9

phylogenetic tree

Question 10

what are branch points

Answer 10

where 2 evolutionary lineages diverged

Question 11

what are dichotomies

Answer 11

branch points

Question 12

sister taxa share

Answer 12

common ancestors ( on a phylogenetic tree)

Question 13

what does it mean when a phylogenetic tree is rooted?

Answer 13

the whole tree ends in one common ancestor

Question 14

whats polytomy

Answer 14

a branch point from where 2+ descendent groups emerge

Question 15

what do polytomies indicate

Answer 15

the evolutionary relationships among descendent taxa are not clear