Assertion: monarch's relationship | /r/HasProperty | challenged in early 1990s
Facets:
Source sentences:
text: Long considered a classic example of Batesian mimicry—when a harmless organism, for its own protection, resembles a poisonous or otherwise dangerous organism—the relationship between the viceroy and monarch was challenged in the early 1990s, when zoologists David B. Ritland and Lincoln P. Brower proposed a new theory, one based on Müllerian mimicry—when two unrelated noxious organisms resemble one another, with each mimetic benefiting.