Karyotypes of cattle (Bos taurus) and horses (Equus caballus) on the basis of synaptonemal complexes
Safronova, L.D.; Pimenova, T.I.
Genetika 24(4): 708-714
1988
ISSN/ISBN: 0016-6758 PMID: 3396873 Document Number: 323336
The cytogenetic study performed has shown that karyotyping of meiotic cells can be based on the synaptonemal complexes (SC) of spreading pachytene spermatocytes of bull and of horse. The horse SC karyotype has not been previously described. A comparison of the relative length of SC with metaphase chromosomes of bull and horse somatic cells has revealed the correspondence of the chromosome length in pachytene of meiosis and metaphase, which is in agreement with the data on house mouse and Chinese hamster. The method of spreading pachytene cells may be of great practical importance in studies of the fertility disturbances in farm animals.