domains and phylogeny

Question 1

what is artificial classification

Answer 1

observable feats

Question 2

what is convergent evolution

Answer 2

similar features but different evolutionary routes
similar due to same environment

Question 3

what is natural classification

Answer 3

based on homolgy

used to use anatomical and morpholgy

now use molecular evidence
-dna sequence

see evolutionary relationships (phylogeny)

Question 4

what are the 3 domains

Answer 4

eukarya
bacteria
archaea

Question 5

what is phylogenetic tree

Answer 5

shows degree of difference between 2 species
-time since shared common ancestor

branch point = where genetic difference occured

longer branch = more changes

Question 5

bacteria v archaea + eukaryotae

Answer 5

different membrane
different flagella structure
different RNA polymerase
no proteins v proteins to gen material
different dna replication mech