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Questions and Answers
What is a synapomorphy?
What is a synapomorphy?
A trait that is similar in two or more species because it is derived from a trait that existed in a common ancestor.
Why do synapomorphies arise during evolution?
Why do synapomorphies arise during evolution?
When a new species begins evolving independently, novel traits arise which are then passed on to its descendant species.
What does it mean to say that one phylogenetic tree is more parsimonious than another?
What does it mean to say that one phylogenetic tree is more parsimonious than another?
Fewer changes have to occur to make the origin of traits fit on the tree.
Is it correct to claim that traits always become more complex or specialized over time?
Is it correct to claim that traits always become more complex or specialized over time?
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Study Notes
Synapomorphy
- Defined as a trait shared in two or more species due to inheritance from a common ancestor.
- Important for understanding evolutionary relationships among species.
Evolution of Synapomorphies
- Arises when a new species evolves independently, leading to the development of novel traits.
- These new traits are passed down to descendant species, showcasing evolutionary changes.
Parsimony in Phylogenetic Trees
- A tree is considered more parsimonious if it requires fewer changes in traits to explain the relationships among species.
- Simplifies the understanding of evolutionary history by minimizing the complexity of trait evolution.
Complexity and Specialization of Traits
- It is inaccurate to claim that traits always evolve towards greater complexity or specialization.
- Evolution can lead to simpler traits, showcasing the variability in evolutionary outcomes.
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Description
Explore the concepts of synapomorphy and its significance in understanding evolutionary relationships among species. This quiz covers the evolution of traits, parsimony in phylogenetic trees, and the complexities of trait development in evolution.
