Imagine That, of Three Species, It Is Known That Species

question 47

Multiple Choice

Imagine that, of three species, it is known that species 1 and 3 were separated 10 million years ago, based on geologic measurements. Genetic analysis at a neutral locus indicates that these species differ by 100 substitutions. If there are 10 substitutions separating species 1 and 2, approximately how long ago did these species diverge?

• A) 0.1 million years ago
• B) 1 million years ago
• C) 10 million years ago
• D) 100 million years ago

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