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Questions and Answers
According to maximum parsimony, what is the assumption about the most likely tree?
According to maximum parsimony, what is the assumption about the most likely tree?
- The most likely tree is the one with the fewest shared derived characters (correct)
- The most likely tree is the one with the most shared derived characters
- The most likely tree is the one with the fewest evolutionary events
- The most likely tree is the one with the most evolutionary events
What do all phylogenetic trees represent?
What do all phylogenetic trees represent?
- Hypotheses about how organisms are related to each other (correct)
- Theories about how organisms are related to each other
- Opinions about how organisms are related to each other
- Facts about how organisms are related to each other
What is the best hypothesis in phylogenetic trees?
What is the best hypothesis in phylogenetic trees?
- The one that fits only molecular data
- The one that fits only morphological data
- The one that fits only fossil data
- The one that fits all available morphological, molecular, and fossil data (correct)
What does Figure 20.18 provide support for?
What does Figure 20.18 provide support for?
What does the orientation of the bones surrounding the eggs suggest in Figure 20.18?
What does the orientation of the bones surrounding the eggs suggest in Figure 20.18?
What is the focus of the research method shown in Figure 20.15?
What is the focus of the research method shown in Figure 20.15?
What is the main purpose of phylogenetic trees?
What is the main purpose of phylogenetic trees?
What is the copyright information for Figure 20.16?
What is the copyright information for Figure 20.16?
What is the copyright information for Figure 20.18?
What is the copyright information for Figure 20.18?
What is depicted in Figure 20.16?
What is depicted in Figure 20.16?
Study Notes
Maximum Parsimony
- The tree with the fewest evolutionary changes is considered the most likely tree.
Phylogenetic Trees
- They represent the evolutionary history of a group of organisms.
Best Hypothesis
- The best hypothesis in phylogenetic trees is the one that requires the fewest evolutionary changes to explain the observed data.
Figure 20.18
- It provides support for the hypothesis that dinosaurs nested and cared for their young.
Orientation of Bones
- The orientation of the bones surrounding the eggs in Figure 20.18 suggests that the dinosaur was protecting its nest.
Figure 20.15
- The research method shown in Figure 20.15 focuses on comparing DNA sequences to create a phylogenetic tree.
Purpose of Phylogenetic Trees
- To illustrate the evolutionary relationships between different organisms.
Copyright information
- Figure 20.16: Copyright © 2011 Pearson Education, Inc.
- Figure 20.18: Copyright © 2011 Pearson Education, Inc.
Figure 20.16
- It depicts a phylogenetic tree based on DNA sequences, illustrating the evolutionary relationships between different species, including humans.
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Description
Test your knowledge on the concept of maximum parsimony, a method used in molecular systematics. Learn about the assumption that the most likely tree is the one that requires the fewest evolutionary events. Take this quiz to assess your understanding of this research method.
