COAMPLIFICATION OF THE ZFX AND ZFY GENES FOR SEX IDENTIFICATION IN PREIMPLANTATION EMBRYOS

Knowledge of the sex of an embryo may be particularly useful for coupl es who have a high risk of producing offspring with inherited genetic disorders. We present a rapid and reliable nested polymerase chain rea ction strategy to simultaneously amplify the ZFX and ZFY genes at the single cell level. Forty single blastomeres isolated from six triploid preembryos were subjected to coamplification of ZFX and ZFY genes. Th e results obtained from the preembryo were consistent with the assigne d genotype. The amplification rate was 80% for ZFX and 84% for ZFY. Ou r strategy can be applied to preimplantation diagnosis of single gene disorders, and is especially useful for preimplantation diagnosis and prevention of linked diseases in in vitro fertilization programs.