Reprod. Dom. Anim., 25, 215-219 (1990)
(D 1990 Paul Parey Scientific Publishers, Berlin and Hamburg
ISSN 0936-6768

Analysis of Synaptonemal Complexes Behaviour

in a Bull carrying the 1;29 and 9;23 Robertsonian Translocations

A. Bouvet and E.P. Cribiu

Institut National de la Recherche Agronomique, Centre de Recherche de Jouy-en-Josas, Laboratoire de Cytogénétique, Jouy-en-Josas, France.

Synaptonemal complex analysis of a 58,XY, t(1;29), t(9;23) bull showed the presence of two separated trivalent figures, and the absence of association of these trivalents with the sex vesicle. The results of this study confirm that in bulls carrying Robertsonian translocations, there is no abnormal" behaviour of synaptonemal complexes at pachytene.

Key words: cattle, meiosis, fertility, synaptonemal complexe Robertsonian translocation.

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