Parthenogenese : [een literatuurstudie over natuurlijke parthenogenese bij gewervelde dieren met aparte bibliografie : een experimentele studie over parthenogenetische stimulatie van muize - eicellen, de vroege in vitro ontwikkeling en pogingen tot bevruchting van deze parthenogenonten]

This thesis deals with parthenogenesis in vertebrates. In the literature the phenomenon parthenogenesis is defined in many different ways and classified in different types. This diversion is described in chapter I where it is also shown that - due to newly developped laboratory techniques - the distinction between parthenogenesis and reproduction based on fertilization is not sufficient anymore. Nowadays experimental developmental- patterns have been made possible that are based on a combination of these two mechanisms of reproduction. In order to solve these problerns of distinction a new terminology is proposed and a classification of possible patterns of development of vertebrates is described