APFIVE Horizontal Gene Transfer and Phylogeny
The genome of a newly discovered microorganism is found to contain genes characteristic of two separate domains of life. Which of the following is the most appropriate next step for refining current phylogenetic models?
A
Conclude that the two domains must be combined into one
B
Investigate possible horizontal gene transfer between domains
C
Immediately create a new domain to classify the organism
D
Reject molecular evidence as unreliable for classification
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