Can two different species, from the same clade, have more than one common ancestor? Choose the MOST correct answer and explanation.
A) No, if they are a clade then you have to assume that they have the same common ancestor.
B) No. They can have many common ancestors, depending on how far back you go in the tree. They cannot have more than one most recent common ancestor.
C) Maybe. Only a paraphyletic clade would have more than one common ancestors.
D) Yes. Dogs and cats have a common ancestor that gave rise to mammals, and an older common ancestor that gave rise to vertebrates. The most recent common ancestor is the point at which two species diverged from each other.
E) Yes. If they are related then they must have common ancestors all along the way. Doesn't everyone?
Correct Answer:
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Q2: Linnaeus began naming organisms that were alike
Q3: The evolutionary history of a species or
Q4: A phylogenetic tree is actually a _
Q5: When species of a single large population
Q6: The three phylogenetic trees above all contain
Q8: When you look at a phylogenetic tree
Q9: When you are classifying a species based
Q10: Cladograms include in the phylogenetic tree shared
Q11: In Figure 26.09 (above) the animals across
Q12: The animals across are a lancelet, lamprey,
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