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

Question

Quizplus · Accepted Answer

This option presents evidence that supports Ohno's suggestion that ancestral invertebrates underwent whole-genome duplication in the process of vertebrate evolution. The fact that modern vertebrates have four times the number of certain groups of genes compared to their homologues in amphioxus indicates that a genome duplication event occurred at some point in the evolutionary history of vertebrates. This duplication allowed for the development of new functions and facilitated the diversification and complexity of the vertebrate genome. Option B, C, D, and E are not supported by evidence and are therefore incorrect.

What Evidence Supports the Ohno Suggestion About Vertebrate Evolution from Ancestral