The reason why the elbow is relatively stable. Concept introduction: Elbow joint is a hinge joint made of the humeroulnar joint and the humeroradial joint. That is, it is formed between the humerus (distal end) in the upper arm, and ulna and radius (proximal end) in the forearm.

Question

6. The mammalian phylogenies (labeled a and b) were produced by two different research groups. a. In which tree do phylogenetic relationships most closely align with biogeography and why? (consult the Teeling and Hedges paper) b. What are the most closely related species to Chiroptera in each tree? Might the use of convergent traits for building phylogenies explain this difference? If so, which tree is most likely to have relied on convergent traits and why? c. What are some possible reasons that the two research groups came up with different phylogenies (in general terms)? describe at least three possible reasons.

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Question

Chapter 9.7, Problem 28LO

Summary Introduction

To explain: The reason why the elbow is relatively stable.

Concept introduction: Elbow joint is a hinge joint made of the humeroulnar joint and the humeroradial joint. That is, it is formed between the humerus (distal end) in the upper arm, and ulna and radius (proximal end) in the forearm.

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