What Evidence Supports the Ohno Suggestion About Vertebrate Evolution from Ancestral

question 18

Multiple Choice

What evidence supports the Ohno suggestion about vertebrate evolution from ancestral invertebrates by whole-genome duplication?

• A)Modern vertebrates have four times the number of certain groups of genes compared to their homologues in Amphioxus.
• B)Modern vertebrates and Amphioxus have exactly the same number of certain groups of genes.
• C)Modern vertebrates have six times the number of certain groups of genes compared to their homologues in Amphioxus.
• D)Amphioxus has four times the number of certain groups of genes compared to their homologues in modern vertebrates.
• E)Amphioxus has eight times the number of certain groups of genes compared to their homologues in modern vertebrates.

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