Artropodi
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CARATTERISTICHE GENERALI
Simmetria bilaterale
Suddivisione del corpo in: capo, torace, addome
Presenza di un esoscheletro cuticolare (chitina)
Presenza di appendici articolate
Sessi separati (uova ninfe insetto adulto)
Muta (cambiamento parziale) o metamorfosi (cambiamento
drastico di morfologia)
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PartenogenesiSi verifica quandoSi ha la formazione dei gameti, ma non lafecondazione,percui l'individuoHa origine dall'uovo
Non fecondato (ad es.negli insetti,Le api fecondate danno femmineDiploidi ma leUova non fecondate maschi aploidi).La partenogenesi può verificarsi anche traGli artropodi e tra i vertebrati e rettili (ad es.Nella lucertola dell‘ Arizona) ed ancheTra i pesci e gli anfibi e in alcune piante (ad es.Nella bocca di leone). RecentementeÈ stato trovato anche nel varano di Komodo(Indonesia), lucertolone carnivoro di oltre 100 kg.
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