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In the Section "Investigating Life: Genetic Messages from Ancient Ecosystems

Question 5

Multiple Choice

In the section "Investigating Life: Genetic Messages from Ancient Ecosystems," which of the following groups of animals was most likely to be present given the abundance of herbs and grasses and lack of vertebrate mitochondrial DNA in samples from Siberia 300-400,000 years ago?


A) mammals
B) arthropods (insects)
C) birds
D) amphibians
E) reptiles

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