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Into the body wall and back out again

Two analyses of developmental patterning functions of leg and wing genes in a crustacean provide complementary support for the incorporation of proximal leg components into the body wall during the crustacean–insect transition, but lead to duelling models for which portion(s) re-emerged from the body as wings.

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Fig. 1: Evolutionary models for the origin of insect wings.


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Correspondence to Frank W. Smith or Elizabeth L. Jockusch.

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Smith, F.W., Jockusch, E.L. Into the body wall and back out again. Nat Ecol Evol 4, 1580–1581 (2020).

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