While most animals are incapable of passing somatic mutations—genetic alterations that arise in an organism’s
nonreproductive cells—on to their offspring, elkhorn coral (Acropora palmata) presents an intriguing ______: in a 2022 study,
researchers found that elkhorn coral produced offspring that inherited somatic mutations from a parent.
hypothesis
aﬃnity
anomaly
corroboration
Choice C is the best answer. An "anomaly" is something that deviates from norms or expectations. In this case, the elkhorn
coral is an anomaly because it can pass on somatic mutations, whereas most other animals can’t.
Choice A is incorrect. A "hypothesis" is "a theory about something," but no theories are provided about elkhorn coral in this
text, just facts. Choice B is incorrect. "Aﬃnity" represents "an inclination or liking toward something." As genetic mutations
tend to occur without any conscious effort, you can’t really have an inclination toward passing on somatic mutations. Choice
D is incorrect. "Corroboration" means "evidence to support or prove something." Because elkhorn coral do the opposite of
what most animals do, they do not provide corroboration of the theory that somatic mutations can’t be passed onto
offspring. Rather, they show the opposite.