[Campbell Biology P.505] Based on Figure 21.14, what is the correct chronological order of e... | Practice Question
Based on Figure 21.14, what is the correct chronological order of events in the evolution of human globin gene families from a single ancestral globin gene?
A: Transposition to different chromosomes → Duplication of ancestral gene → Mutation in both copies → Further duplications and mutations.
B: Mutation in both copies → Duplication of ancestral gene → Transposition to different chromosomes → Further duplications and mutations.
C: Duplication of ancestral gene → Mutation in both copies → Transposition to different chromosomes → Further duplications and mutations.
D: Duplication of ancestral gene → Transposition to different chromosomes → Mutation in both copies → Further duplications and mutations.
Explanation
Figure 21.14 illustrates the sequence of events as: Duplication of ancestral gene, followed by Mutation in both copies, then Transposition to different chromosomes, and finally Further duplications and mutations.