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Lizard reproductive strategies vary; they may be:
 
Lizard reproductive strategies vary; they may be:
 
* '''oviparous''' - laying eggs (most lizards)
 
* '''oviparous''' - laying eggs (most lizards)
* '''ovoviviparous''' - the eggs are retained within the female until birth of live young (all monitors, most iguanids, water dragons, all geckos, most chameleons)
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* '''ovoviviparous''' - the eggs are retained within the female until birth of live young (all [[Monitor|monitors]], most iguanids, [[Water Dragon|water dragons]], all geckos, most [[Chameleon|chameleons]])
* '''viviparous''' - live-bearing, with a placental type of circulatory connection (blue-tongued skinks, shingle-backed skink, prehensile-tailed skink, Jackson's chameleon)
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* '''viviparous''' - live-bearing, with a placental type of circulatory connection (blue-tongued skinks, [[Stump-tailed Skink|shingle-backed skink]], [[Prehensile-tailed Skink|prehensile-tailed skink]], [[Chamelone|Jackson's chameleon]])
 
* '''parthenogenic''' - asexual reproduction found in lizards such as certain ''Lacerta'' spp. and whiptail lizards (Aspidocelis [''Cnemidophorus''] spp.) consisting entirely of females. Although they reproduce asexually, these females still show courting and pseudocopulation.
 
* '''parthenogenic''' - asexual reproduction found in lizards such as certain ''Lacerta'' spp. and whiptail lizards (Aspidocelis [''Cnemidophorus''] spp.) consisting entirely of females. Although they reproduce asexually, these females still show courting and pseudocopulation.
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==Temperature-Dependent Sex Determination==
 
==Temperature-Dependent Sex Determination==
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A few species of lizards, such as the leopard gecko (''Eublepharis macularius'') have temperature-dependent sex determination where the sex of the developing fetus is determined by the temperature at which the eggs are incubated. The exact temperatures are species dependent; however the shift from one sex to the other is not absolute. A range of temperatures exists at which both sexes are produced at varying proportions and therefore most incubators used by breeders are not accurate.
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A few species of lizards, such as the [[Leopard Gecko|leopard gecko]] (''Eublepharis macularius'') have temperature-dependent sex determination where the sex of the developing fetus is determined by the temperature at which the eggs are incubated. The exact temperatures are species dependent; however the shift from one sex to the other is not absolute. A range of temperatures exists at which both sexes are produced at varying proportions and therefore most incubators used by breeders are not accurate.
     
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