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Nicholas A. Levis
Ecological, Evolutionary, Developmental Biologist
Department of Biology
Indiana University, Bloomington, IN, USA

Nematode mouth plasticity
Narrow-mouth (top) and wide-mouth (bottom) morphs of the nematode Pristionchus pacificus.

Spea bombifrons cannibal
Photo credit: David Pfennig

Tiger salamander

Nematode mouth plasticity
Narrow-mouth (top) and wide-mouth (bottom) morphs of the nematode Pristionchus pacificus.
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