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# Species F100 80 MYA MYA40 MYA20 MYAWhich of the following hypotheses about the last common ancestor of these species provides the simplest explanation for the infor...

## Question

###### Species F100 80 MYA MYA40 MYA20 MYAWhich of the following hypotheses about the last common ancestor of these species provides the simplest explanation for the information in this phylogenic tree; based on the principle of parsimony? In other words which hypothesis requires fewer evolutionary transitions (.e, from endothermy ectothermy, or from ectothermy to endothermy)?The last common ancestor was cold-blooded (ectothermic), and some species later evolved to become warm-blooded (endothermic) B.

Species F 100 80 MYA MYA 40 MYA 20 MYA Which of the following hypotheses about the last common ancestor of these species provides the simplest explanation for the information in this phylogenic tree; based on the principle of parsimony? In other words which hypothesis requires fewer evolutionary transitions (.e, from endothermy ectothermy, or from ectothermy to endothermy)? The last common ancestor was cold-blooded (ectothermic), and some species later evolved to become warm-blooded (endothermic) B. The last common ancestor was warm-blooded (endothermic), and some species later evolved to become cold-blooded (ectothermic) Clear my choice

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