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Questions and Answers
A clade includes a common ancestor and some of its descendants.
A clade includes a common ancestor and some of its descendants.
False (B)
A group of organisms that consists of a common ancestor and all of its descendants can be defined as a clade.
A group of organisms that consists of a common ancestor and all of its descendants can be defined as a clade.
True (A)
A polyphyletic group is the same as a clade.
A polyphyletic group is the same as a clade.
False (B)
Clades can be nested within larger clades.
Clades can be nested within larger clades.
If two species are in the same clade, they are more closely related to each other than to any species outside of that clade.
If two species are in the same clade, they are more closely related to each other than to any species outside of that clade.
A clade is defined solely by physical similarity among its members.
A clade is defined solely by physical similarity among its members.
The concept of a clade is only applicable to living organisms, not to extinct species.
The concept of a clade is only applicable to living organisms, not to extinct species.
Phylogenetic trees are used to visually represent clades and their relationships.
Phylogenetic trees are used to visually represent clades and their relationships.
A common ancestor is not part of the clade it defines.
A common ancestor is not part of the clade it defines.
Clades can only be determined using genetic data; morphological data is insufficient.
Clades can only be determined using genetic data; morphological data is insufficient.
The term 'clade' is interchangeable with the term 'species'.
The term 'clade' is interchangeable with the term 'species'.
If a trait is present in all members of a clade, it was necessarily present in their common ancestor.
If a trait is present in all members of a clade, it was necessarily present in their common ancestor.
Clades are fixed and never change once they are identified.
Clades are fixed and never change once they are identified.
A paraphyletic group is considered a type of clade.
A paraphyletic group is considered a type of clade.
Understanding clades is important for studying the evolution and diversity of life.
Understanding clades is important for studying the evolution and diversity of life.
Horizontal gene transfer can easily define a clade.
Horizontal gene transfer can easily define a clade.
The last universal common ancestor (LUCA) represents the base of the clade that contains all life on Earth.
The last universal common ancestor (LUCA) represents the base of the clade that contains all life on Earth.
A group consisting of all descendants of a single ancestor, excluding the ancestor itself, meets the definition of a clade.
A group consisting of all descendants of a single ancestor, excluding the ancestor itself, meets the definition of a clade.
The terms ‘monophyletic group’ and ‘clade’ are effectively synonymous.
The terms ‘monophyletic group’ and ‘clade’ are effectively synonymous.
If Species A and Species B are in different clades, it's impossible for them to share any genetic material.
If Species A and Species B are in different clades, it's impossible for them to share any genetic material.
Flashcards
Clade
Clade
A group of organisms consisting of a common ancestor and all its descendants.
Study Notes
- A clade is a group of organisms
- A clade consists of a common ancestor
- A clade includes all descendants of that common ancestor
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