[Contribution of applied cytogenetics to medically assisted procreation]. / Apports de la cytogénétique appliquée aux procréations médicalement assistées.

ABSTRACT

The cytogenetic studies of gametes and embryos reveal the incidence of chromosomic abnormalities in medically assisted pregnancies. When extended to natural fecundation, these data enable a better comprehension of the place and the role of the selection in the quality of the conceptus.