Lab Exam Review

Question 1

Claude

Answer 1

Group of organisms with a common ancestor

Question 2

Character

Answer 2

Observable aspect of an organism

Question 3

Node

Answer 3

Branching point

Question 4

In group

Answer 4

Group under consideration

Question 5

Out group

Answer 5

Reference to compare in group too

Question 6

Apomorphy

Answer 6

Derived trait that is unique to a group or species.

Question 7

Autapomorphy

Answer 7

A derived trait that is unique to a given taxa. Not found in any other taxa.

Question 8

Synapomorphy

Answer 8

Characteristic present in an ancestral species and shared exclusively by its evolutionary descendants.

Question 9

Plesiomorphy

Answer 9

Ancestral trait that is homologous within a particular group of organisms but is not unique to the members of that group.

Question 10

Homoplasty

Answer 10

Trait shared by set of species but is not present in their common ancestor. Also called convergence.

Question 11

Homologous

Answer 11

Similar species related by common decent

Question 12

Analogous

Answer 12

Species with similar structures but have different origins.