Colin A Finn, University of Liverpool, UK
Published online: May 2001
DOI: 10.1038/npg.els.0001851
Vertebrates comprise a diverse collection of animal species. In their reproductive processes they show evolutionary progression from simple shedding of the gametes into the water, as seen in cyclostomes, to the birth of living young seen in most mammals.
Keywords: sex; gamete; fertilization; pregnancy; parturition; maternal care
Further Reading
Cohen J (1977) Reproduction. London: Butterworths.
Lamming GE (ed.) (1984) Reproductive cycles of vertebrates. Marshall's Physiology of Reproduction, 4th edn, vol. 1. Edinburgh: Churchill Livingstone.
Sadleir RMFS (1973) Reproduction of Vertebrates. Academic Press.
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