Assertion: dark moth | /r/HasAspect | greater fitness
Facets:
value: on average, more surviving offspring
type: OTHER
value: in the industrial areas
type: LOCATION
value: than light gray moths
type: OTHER
Source sentences:
text: Through his investigations, Kettlewell established that dark gray moths had greater fitness (meaning they produced, on average, more surviving offspring) in the industrial areas than light gray moths (who, on average, produced fewer surviving offspring).