객관식
Using cladistic analysis, a taxonomist wishes to construct a phylogenetic tree showing the relationships among various species of mammals. Which of the following would be the least useful for this purpose?
2008
views
25. Phylogeny
Phylogeny
Multiple Choice
Which statement below is true of parsimonious trees?
A
The most parsimonious tree requires the fewest evolutionary events to have occurred in the form of shared ancestral characters.
B
Given the rules of how morphological traits change over time, a tree can be found that reflects the most likely sequence of evolutionary events.
C
Given the rules of how DNA changes over time, a tree can be found that reflects the most likely sequence of evolutionary events.
D
Trees can be constructed that are the most parsimonious or the most likely, but not both at the same time.
E
The most parsimonious tree requires the fewest evolutionary events to have occurred in the form of shared derived characters.
검증된 단계별 안내1
Understand the concept of a parsimonious tree: In phylogenetics, a parsimonious tree is one that requires the fewest evolutionary changes to explain the observed data.
Identify the key terms: 'shared ancestral characters' and 'shared derived characters'. Shared ancestral characters are traits that are inherited from a common ancestor, while shared derived characters are traits that are unique to a particular group and not present in distant ancestors.
Evaluate the statements: The statement that mentions 'shared derived characters' aligns with the definition of a parsimonious tree, as it focuses on minimizing evolutionary changes.
Consider the role of evolutionary events: A parsimonious tree aims to minimize the number of evolutionary events, such as mutations or trait changes, that are needed to explain the relationships between species.
Select the correct statement: The statement that correctly describes a parsimonious tree is the one that mentions 'shared derived characters', as it emphasizes minimizing evolutionary events in the form of these characters.
Related Videos
Related Practice
