evidence used in classification and phylogeny

Question 1

what is phylogeny

Answer 1

-the study of evolutionary relationships between organisms
-how closely related they are

Question 2

what do any 2 species living today have

Answer 2

a common ancestor

Question 3

what happened in the 1970’s

Answer 3

-huge technological advances
(gene sequencing)
-meant that genetic analysis showed more information about the Prokaryote kingdom

Question 4

how were archaea more similar to eukaryotes

Answer 4

-Similar RNA polymerase
-Similar DNA/RNA synthesis mechanisms
-DNA associated with proteins

Question 5

what do other bacteria have making them more different from eukaryotes and archaea

Answer 5

-Different membrane structure
-Different flagella structure
-Different RNA polymerase
-DNA not associated with proteins (histones)

Question 6

what is a monophyletic group

Answer 6

a single common ancestor and all of its descendants
-On a phylogenetic tree includes a ‘node’ and all of it descendants

Question 7

what is the difference between phylogeny and classification

Answer 7

phylogeny- study of evolutionary relationships between organisms
classification- process of placing living things into groups