How has the role of horizontal gene transfer (HGT) in evolution changed over time?
A) Early life-forms were fixed entities, and the only way to adapt was through HGT. HGT no longer occurs.
B) Early life-forms had modular genomes for which HGT played a large role in adaptation. This role has decreased over time.
C) Early life-forms had modular genomes for which HGT played a large role in adaptation. This role has increased over time.
D) HGT was irrelevant for early life-forms. HGT is a more recent phenomenon and is important for current adaptations.
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