Four Different Phylogenetic Trees of a Group of Salamanders Have

question 26

Multiple Choice

Four different phylogenetic trees of a group of salamanders have been proposed.Trees A and B each require 12 homoplasies,but tree A requires 14 synapomorphies and tree B requires 13 synapomorphies.Tree C requires 15 homoplasies and 13 synapomorphies.Finally,tree D requires 10 homoplasies and 15 synapomorphies.According to the principle of parsimony,which tree (or trees) is the best?

• A) Tree A
• B) Tree B
• C) Tree C
• D) Tree D
• E) Both tree A and tree B

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Definitions:

Realistic Conflict Theory

A social psychology theory that suggests intergroup conflicts arise from competition over limited resources.

Prejudice

Preconceived opinion that is not based on reason or actual experience.

Segregation

The enforced separation of different racial groups in a country, community, or establishment.

Prejudice

A preconceived opinion or judgment about someone or something that is not based on reason or actual experience.