Assertion: mutation | /r/HasProperty | lethal
Facets:
value: usually
type: DEGREE
Source sentences:
text: A fitness of zero, less than one, one, more than one, respectively, indicates that mutations are lethal, deleterious, neutral, and advantageous.
text: Such mutations are called lethal.
text: Most mutations either have no effect, are deleterious, or are lethal; some provide survival benefits, which are passed on to progeny.
text: Mutations that lead to development of ectopic structures are usually lethal.
text: Such mutations are called lethal.