Answered: In island radiations we often see the…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

See similar textbooks

Related questions

Concept explainers

Question

1. In island radiations we often see the following pattern: similar forms found in different species living in similar habitats on different islands. This pattern raises the question: did the form evolve once on a single island in a single species and then spread to multiple islands by dispersal (let’s call this the “dispersal model”)? Or did a single species first disperse to different islands, then ecologically adapt to the many different environments on each (let’s call this the “convergence model”)? A phylogeny can help us identify which of these processes is at play. Considering the three traits shown on this tree, which model appears to have more support: the dispersal model or the convergence model? Explain how you arrived at this conclusion.

Habit O shrub
| tree
Leaf margin O unlobed
slightly lobed
distinctly lobed
Capitula O homogamous
partially heterogamous
fully heterogamous
S. villosa
S. stewarti
0 S. atractyloides
S. affinis
S. cordata
100 S. microcephala
S. crockeri
S. aspera
S. retroflexa
S. helleri
S. pedunculata
S. baurii
S. gordilloi
S. divisa
S. incisa
- bcghl
- bc
- gi
- gj
- dghk|
- aef
k
0.6
0.5
0.4
0.3 0.2 0.1
O Ma

Expert Solution

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

Knowledge Booster

Learn more about

Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, biology and related others by exploring similar questions and additional content below.

Similar questions